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Source: https://devhubby.com/thread/how-to-mock-exception-in-jest

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  451.  caret-color: #69cb69 !important;
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  473. .v-application .success--text.text--darken-3 {
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  475.  caret-color: #006000 !important;
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  481. .v-application .success--text.text--darken-4 {
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  483.  caret-color: #004700 !important;
  484. }
  485. .v-application .warning {
  486.  background-color: #ffc107 !important;
  487.  border-color: #ffc107 !important;
  488. }
  489. .v-application .warning--text {
  490.  color: #ffc107 !important;
  491.  caret-color: #ffc107 !important;
  492. }
  493. .v-application .warning.lighten-5 {
  494.  background-color: #ffffae !important;
  495.  border-color: #ffffae !important;
  496. }
  497. .v-application .warning--text.text--lighten-5 {
  498.  color: #ffffae !important;
  499.  caret-color: #ffffae !important;
  500. }
  501. .v-application .warning.lighten-4 {
  502.  background-color: #ffff91 !important;
  503.  border-color: #ffff91 !important;
  504. }
  505. .v-application .warning--text.text--lighten-4 {
  506.  color: #ffff91 !important;
  507.  caret-color: #ffff91 !important;
  508. }
  509. .v-application .warning.lighten-3 {
  510.  background-color: #ffff74 !important;
  511.  border-color: #ffff74 !important;
  512. }
  513. .v-application .warning--text.text--lighten-3 {
  514.  color: #ffff74 !important;
  515.  caret-color: #ffff74 !important;
  516. }
  517. .v-application .warning.lighten-2 {
  518.  background-color: #fff956 !important;
  519.  border-color: #fff956 !important;
  520. }
  521. .v-application .warning--text.text--lighten-2 {
  522.  color: #fff956 !important;
  523.  caret-color: #fff956 !important;
  524. }
  525. .v-application .warning.lighten-1 {
  526.  background-color: #ffdd37 !important;
  527.  border-color: #ffdd37 !important;
  528. }
  529. .v-application .warning--text.text--lighten-1 {
  530.  color: #ffdd37 !important;
  531.  caret-color: #ffdd37 !important;
  532. }
  533. .v-application .warning.darken-1 {
  534.  background-color: #e0a600 !important;
  535.  border-color: #e0a600 !important;
  536. }
  537. .v-application .warning--text.text--darken-1 {
  538.  color: #e0a600 !important;
  539.  caret-color: #e0a600 !important;
  540. }
  541. .v-application .warning.darken-2 {
  542.  background-color: #c18c00 !important;
  543.  border-color: #c18c00 !important;
  544. }
  545. .v-application .warning--text.text--darken-2 {
  546.  color: #c18c00 !important;
  547.  caret-color: #c18c00 !important;
  548. }
  549. .v-application .warning.darken-3 {
  550.  background-color: #a27300 !important;
  551.  border-color: #a27300 !important;
  552. }
  553. .v-application .warning--text.text--darken-3 {
  554.  color: #a27300 !important;
  555.  caret-color: #a27300 !important;
  556. }
  557. .v-application .warning.darken-4 {
  558.  background-color: #855a00 !important;
  559.  border-color: #855a00 !important;
  560. }
  561. .v-application .warning--text.text--darken-4 {
  562.  color: #855a00 !important;
  563.  caret-color: #855a00 !important;
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  565.  </head>
  566.  <body >
  567.    <div data-server-rendered="true" id="__nuxt"><!----><div id="__layout"><div data-app="true" id="app" class="v-application v-application--is-ltr theme--light" style="font-family:Roboto;"><div class="v-application--wrap"><div tabindex="0" aria-label="Loading" class="vld-overlay is-active is-full-page" style="z-index:999;display:none;"><div class="vld-background" style="background:#fff;opacity:0.5;"></div><div class="vld-icon"><svg viewBox="0 0 38 38" xmlns="http://www.w3.org/2000/svg" width="65" height="65" stroke="#1976d2"><g fill="none" fill-rule="evenodd"><g transform="translate(1 1)" stroke-width="2"><circle stroke-opacity=".25" cx="18" cy="18" r="18"></circle><path d="M36 18c0-9.94-8.06-18-18-18"><animateTransform attributeName="transform" type="rotate" from="0 18 18" to="360 18 18" dur="0.8s" repeatCount="indefinite"></animateTransform></path></g></g></svg></div></div> <!----> <div class="header-section"><header class="v-sheet theme--light elevation-3 v-toolbar v-app-bar 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theme--light"><div class="v-list-item__content"><div class="v-list-item__title">Sign Up</div></div></a> <!----></div></div><div class="v-navigation-drawer__border"></div></nav> <header class="hidden-md-and-up v-sheet theme--light v-toolbar v-app-bar v-app-bar--fixed" style="height:56px;margin-top:0px;transform:translateY(0px);left:0px;right:0px;"><div class="v-toolbar__content" style="height:56px;"><div class="row align-center"><button type="button" class="v-app-bar__nav-icon v-btn v-btn--flat v-btn--icon v-btn--round theme--light v-size--default"><span class="v-btn__content"><i aria-hidden="true" class="v-icon notranslate mdi mdi-menu theme--light"></i></span></button> <div class="d-flex col-10 pr-0 align-center justify-end"><button type="button" class="v-btn v-btn--flat v-btn--icon v-btn--round theme--dark v-size--default primary--text"><span class="v-btn__content"><i aria-hidden="true" class="v-icon notranslate mdi mdi-magnify theme--dark"></i></span></button> <a href="/login" class="v-btn v-btn--flat v-btn--icon v-btn--round v-btn--router theme--light v-size--default success--text"><span class="v-btn__content"><i aria-hidden="true" class="v-icon notranslate mdi mdi-message-question-outline theme--light"></i></span></a> <div class="col-sm-3 col-md-3 col-4"><a href="/" class="nuxt-link-active"><div class="logo d-flex w-100"><div aria-label="Software Developer Questions and Answers" role="img" class="v-image v-responsive theme--light" style="max-height:50px;"><div class="v-responsive__sizer" style="padding-bottom:100%;"></div><div class="v-image__image v-image__image--preload v-image__image--contain" style="background-image:;background-position:center center;"></div><div class="v-responsive__content"></div></div></div></a></div></div></div></div></header></div></div></header></div> <div class="container"><!----> <div class="flex"><ul itemscope="itemscope" itemtype="http://schema.org/BreadcrumbList" class="v-breadcrumbs v-breadcrumbs--large theme--light"><li itemprop="itemListElement" itemscope="itemscope" itemtype="http://schema.org/ListItem"><a href="/" itemprop="item" class="v-breadcrumbs__item nuxt-link-active"><span itemprop="name">Home</span></a> <meta content="1" itemprop="position"></li><li class="v-breadcrumbs__divider">&gt;</li><li itemprop="itemListElement" itemscope="itemscope" itemtype="http://schema.org/ListItem"><a href="/forum/javascript" itemprop="item" class="v-breadcrumbs__item"><span itemprop="name">JavaScript</span></a> <meta content="2" itemprop="position"></li><li class="v-breadcrumbs__divider">&gt;</li><li itemprop="itemListElement" itemscope="itemscope" itemtype="http://schema.org/ListItem"><a href="#" itemprop="item" class="v-breadcrumbs__item v-breadcrumbs__item--disabled"><span itemprop="name">how to mock exception in jest?</span></a> <meta content="3" itemprop="position"></li></ul></div> <div class="row mx-0 mt-1"><div class="flex md4 lg3 xl2"><div><div class="row d-md-none justify-space-around"><div class="py-0 col-sm-10 col-md-8 col-12"><div class="px-1 transparent v-sheet theme--light"><div class="v-item-group theme--light v-slide-group v-chip-group"><div class="v-slide-group__prev v-slide-group__prev--disabled"><!----></div><div class="v-slide-group__wrapper"><div class="v-slide-group__content"><a href="/forum/php" tabindex="0" draggable="false" router="" class="v-chip v-chip--clickable v-chip--link v-chip--no-color theme--light v-size--default primary--text"><span class="v-chip__content"><div class="v-image v-responsive mr-1 theme--light" style="height:24px;width:24px;"><div class="v-image__image v-image__image--preload v-image__image--contain" style="background-image:;background-position:center center;"></div><div class="v-responsive__content"></div></div>
  568.            PHP
  569.          </span></a><a href="/forum/javascript" tabindex="0" draggable="false" router="" class="v-chip v-chip--clickable v-chip--link v-chip--no-color theme--light v-size--default"><span class="v-chip__content"><div class="v-image v-responsive mr-1 theme--light" style="height:24px;width:24px;"><div class="v-image__image v-image__image--preload v-image__image--contain" style="background-image:;background-position:center center;"></div><div class="v-responsive__content"></div></div>
  570.            JavaScript
  571.          </span></a><a href="/forum/sql" tabindex="0" draggable="false" router="" class="v-chip v-chip--clickable v-chip--link v-chip--no-color theme--light v-size--default"><span class="v-chip__content"><div class="v-image v-responsive mr-1 theme--light" style="height:24px;width:24px;"><div class="v-image__image v-image__image--preload v-image__image--contain" style="background-image:;background-position:center center;"></div><div class="v-responsive__content"></div></div>
  572.            SQL
  573.          </span></a><a href="/forum/golang" tabindex="0" draggable="false" router="" class="v-chip v-chip--clickable v-chip--link v-chip--no-color theme--light v-size--default"><span class="v-chip__content"><div class="v-image v-responsive mr-1 theme--light" style="height:24px;width:24px;"><div class="v-image__image v-image__image--preload v-image__image--contain" style="background-image:;background-position:center center;"></div><div class="v-responsive__content"></div></div>
  574.            Golang
  575.          </span></a><a href="/forum/html-css" tabindex="0" draggable="false" router="" class="v-chip v-chip--clickable v-chip--link v-chip--no-color theme--light v-size--default"><span class="v-chip__content"><div class="v-image v-responsive mr-1 theme--light" style="height:24px;width:24px;"><div class="v-image__image v-image__image--preload v-image__image--contain" style="background-image:;background-position:center center;"></div><div class="v-responsive__content"></div></div>
  576.            HTML/CSS
  577.          </span></a><a href="/forum/ruby" tabindex="0" draggable="false" router="" class="v-chip v-chip--clickable v-chip--link v-chip--no-color theme--light v-size--default"><span class="v-chip__content"><div class="v-image v-responsive mr-1 theme--light" style="height:24px;width:24px;"><div class="v-image__image v-image__image--preload v-image__image--contain" style="background-image:;background-position:center center;"></div><div class="v-responsive__content"></div></div>
  578.            Ruby
  579.          </span></a><a href="/forum/python" tabindex="0" draggable="false" router="" class="v-chip v-chip--clickable v-chip--link v-chip--no-color theme--light v-size--default"><span class="v-chip__content"><div class="v-image v-responsive mr-1 theme--light" style="height:24px;width:24px;"><div class="v-image__image v-image__image--preload v-image__image--contain" style="background-image:;background-position:center center;"></div><div class="v-responsive__content"></div></div>
  580.            Python
  581.          </span></a><a href="/forum/java" tabindex="0" draggable="false" router="" class="v-chip v-chip--clickable v-chip--link v-chip--no-color theme--light v-size--default"><span class="v-chip__content"><div class="v-image v-responsive mr-1 theme--light" style="height:24px;width:24px;"><div class="v-image__image v-image__image--preload v-image__image--contain" style="background-image:;background-position:center center;"></div><div class="v-responsive__content"></div></div>
  582.            Java
  583.          </span></a><a href="/forum/c-c" tabindex="0" draggable="false" router="" class="v-chip v-chip--clickable v-chip--link v-chip--no-color theme--light v-size--default"><span class="v-chip__content"><div class="v-image v-responsive mr-1 theme--light" style="height:24px;width:24px;"><div class="v-image__image v-image__image--preload v-image__image--contain" style="background-image:;background-position:center center;"></div><div class="v-responsive__content"></div></div>
  584.            C/C++
  585.          </span></a><a href="/forum/swift" tabindex="0" draggable="false" router="" class="v-chip v-chip--clickable v-chip--link v-chip--no-color theme--light v-size--default"><span class="v-chip__content"><div class="v-image v-responsive mr-1 theme--light" style="height:24px;width:24px;"><div class="v-image__image v-image__image--preload v-image__image--contain" style="background-image:;background-position:center center;"></div><div class="v-responsive__content"></div></div>
  586.            Swift
  587.          </span></a><a href="/forum/other" tabindex="0" draggable="false" router="" class="v-chip v-chip--clickable v-chip--link v-chip--no-color theme--light v-size--default"><span class="v-chip__content"><div class="v-image v-responsive mr-1 theme--light" style="height:24px;width:24px;"><div class="v-image__image v-image__image--preload v-image__image--contain" style="background-image:;background-position:center center;"></div><div class="v-responsive__content"></div></div>
  588.            Other
  589.          </span></a></div></div><div class="v-slide-group__next v-slide-group__next--disabled"><!----></div></div></div></div></div> <div class="row d-none d-lg-flex d-xl-flex d-md-flex pr-3"><div class="w-100 v-card v-sheet theme--light"><header class="v-sheet theme--dark v-toolbar info" style="height:56px;"><div class="v-toolbar__content" style="height:56px;"><div class="v-toolbar__title">Category</div></div></header> <div style="max-height:800px;overflow-y:auto;"><div><a href="/forum/php" tabindex="0" router="" class="word-break v-list-item v-list-item--link theme--light"><div class="v-list-item__icon"><div class="v-image v-responsive mr-1 theme--light" style="height:24px;width:24px;"><div class="v-image__image v-image__image--preload v-image__image--contain" style="background-image:;background-position:center center;"></div><div class="v-responsive__content"></div></div></div> <div class="v-list-item__title">
  590.                PHP
  591.              </div></a></div><div><a href="/forum/javascript" tabindex="0" router="" class="word-break v-list-item v-list-item--link theme--light"><div class="v-list-item__icon"><div class="v-image v-responsive mr-1 theme--light" style="height:24px;width:24px;"><div class="v-image__image v-image__image--preload v-image__image--contain" style="background-image:;background-position:center center;"></div><div class="v-responsive__content"></div></div></div> <div class="v-list-item__title">
  592.                JavaScript
  593.              </div></a></div><div><a href="/forum/sql" tabindex="0" router="" class="word-break v-list-item v-list-item--link theme--light"><div class="v-list-item__icon"><div class="v-image v-responsive mr-1 theme--light" style="height:24px;width:24px;"><div class="v-image__image v-image__image--preload v-image__image--contain" style="background-image:;background-position:center center;"></div><div class="v-responsive__content"></div></div></div> <div class="v-list-item__title">
  594.                SQL
  595.              </div></a></div><div><a href="/forum/golang" tabindex="0" router="" class="word-break v-list-item v-list-item--link theme--light"><div class="v-list-item__icon"><div class="v-image v-responsive mr-1 theme--light" style="height:24px;width:24px;"><div class="v-image__image v-image__image--preload v-image__image--contain" style="background-image:;background-position:center center;"></div><div class="v-responsive__content"></div></div></div> <div class="v-list-item__title">
  596.                Golang
  597.              </div></a></div><div><a href="/forum/html-css" tabindex="0" router="" class="word-break v-list-item v-list-item--link theme--light"><div class="v-list-item__icon"><div class="v-image v-responsive mr-1 theme--light" style="height:24px;width:24px;"><div class="v-image__image v-image__image--preload v-image__image--contain" style="background-image:;background-position:center center;"></div><div class="v-responsive__content"></div></div></div> <div class="v-list-item__title">
  598.                HTML/CSS
  599.              </div></a></div><div><a href="/forum/ruby" tabindex="0" router="" class="word-break v-list-item v-list-item--link theme--light"><div class="v-list-item__icon"><div class="v-image v-responsive mr-1 theme--light" style="height:24px;width:24px;"><div class="v-image__image v-image__image--preload v-image__image--contain" style="background-image:;background-position:center center;"></div><div class="v-responsive__content"></div></div></div> <div class="v-list-item__title">
  600.                Ruby
  601.              </div></a></div><div><a href="/forum/python" tabindex="0" router="" class="word-break v-list-item v-list-item--link theme--light"><div class="v-list-item__icon"><div class="v-image v-responsive mr-1 theme--light" style="height:24px;width:24px;"><div class="v-image__image v-image__image--preload v-image__image--contain" style="background-image:;background-position:center center;"></div><div class="v-responsive__content"></div></div></div> <div class="v-list-item__title">
  602.                Python
  603.              </div></a></div><div><a href="/forum/java" tabindex="0" router="" class="word-break v-list-item v-list-item--link theme--light"><div class="v-list-item__icon"><div class="v-image v-responsive mr-1 theme--light" style="height:24px;width:24px;"><div class="v-image__image v-image__image--preload v-image__image--contain" style="background-image:;background-position:center center;"></div><div class="v-responsive__content"></div></div></div> <div class="v-list-item__title">
  604.                Java
  605.              </div></a></div><div><a href="/forum/c-c" tabindex="0" router="" class="word-break v-list-item v-list-item--link theme--light"><div class="v-list-item__icon"><div class="v-image v-responsive mr-1 theme--light" style="height:24px;width:24px;"><div class="v-image__image v-image__image--preload v-image__image--contain" style="background-image:;background-position:center center;"></div><div class="v-responsive__content"></div></div></div> <div class="v-list-item__title">
  606.                C/C++
  607.              </div></a></div><div><a href="/forum/swift" tabindex="0" router="" class="word-break v-list-item v-list-item--link theme--light"><div class="v-list-item__icon"><div class="v-image v-responsive mr-1 theme--light" style="height:24px;width:24px;"><div class="v-image__image v-image__image--preload v-image__image--contain" style="background-image:;background-position:center center;"></div><div class="v-responsive__content"></div></div></div> <div class="v-list-item__title">
  608.                Swift
  609.              </div></a></div><div><a href="/forum/other" tabindex="0" router="" class="word-break v-list-item v-list-item--link theme--light"><div class="v-list-item__icon"><div class="v-image v-responsive mr-1 theme--light" style="height:24px;width:24px;"><div class="v-image__image v-image__image--preload v-image__image--contain" style="background-image:;background-position:center center;"></div><div class="v-responsive__content"></div></div></div> <div class="v-list-item__title">
  610.                Other
  611.              </div></a></div></div></div> <!----></div></div></div> <div class="flex pl-lg-4 pl-md-4 pl-xl-4 md8 lg9 xl10"><div class="flex"><div itemscope="itemscope" itemtype="http://schema.org/DiscussionForumPosting" class="row"><div class="col-sm-12 col-md-8 col-lg-8 col-12"><h1 itemprop="headline">how to mock exception in jest?</h1></div> <div class="text-md-right text-center col-sm-12 col-md-4 col-lg-4 col-12"><!----> <!----> <button type="button" class="v-btn v-btn--contained theme--dark v-size--default primary"><span class="v-btn__content">New message
  612.      </span></button></div></div> <div role="dialog" class="v-dialog__container"><!----></div> <div class="row"><div class="col col-12"><div class="v-card v-sheet theme--light"><div role="list" class="v-list v-sheet theme--light"><div tabindex="-1" role="listitem" class="v-list-item theme--light"><div class="row thread-row" data-v-3262fcae><!----> <!----> <!----> <!----> <!----> <div class="row mx-3" data-v-3262fcae data-v-3262fcae><div class="col-sm-3 col-md-3 col-lg-2 col-xl-1 col-12" data-v-3262fcae data-v-3262fcae><div itemscope="itemscope" itemtype="http://schema.org/Person" class="avatar text-center" data-v-3262fcae><div><div class="v-avatar" style="height:50px;min-width:50px;width:50px;"><div aria-label="cassandra" role="img" class="v-image v-responsive theme--light"><div class="v-image__image v-image__image--preload v-image__image--cover" style="background-image:;background-position:center center;"></div><div class="v-responsive__content"></div></div></div></div> <p class="my-0 caption">Member</p> <div><a href="/profile/cassandra" class="d-inline-flex"><p itemprop="name" class="subtitle-2 mb-0">
  613.        cassandra
  614.      </p></a></div> <!----></div></div> <div class="py-0 col-sm-9 col-md-9 col-lg-10 col-xl-11 col-12" data-v-3262fcae data-v-3262fcae><!----> <div class="py-0 col col-12" data-v-3262fcae data-v-3262fcae><span class="caption" data-v-3262fcae>by
  615.          <a href="/profile/cassandra" class="d-inline-flex caption" data-v-3262fcae>
  616.            cassandra
  617.          </a></span>, <span class="caption" data-v-3262fcae>in category: </span> <span class="caption" data-v-3262fcae><a href="/forum/javascript" class="d-inline-flex caption" data-v-3262fcae>
  618.            JavaScript
  619.          </a></span>,
  620.        <span class="caption" data-v-3262fcae>a year ago</span></div> <!----> <!----></div> <div class="col col-12" data-v-3262fcae data-v-3262fcae><div class="forum-text ql-viewer" data-v-3262fcae><p>how to mock exception in jest?</p></div> <div class="d-flex justify-start flex-wrap flex-lg-nowrap flex-md-nowrap flex-xl-nowrap flex-sm-nowrap" data-v-3262fcae><div class="text-center text-lg-left text-md-left text-xl-left text-sm-left col-sm-5 col-md-4 col-lg-2 col-xl-2 col-12" data-v-3262fcae data-v-3262fcae><div class="like-dislike-buttons pt-3" data-v-0348114a data-v-3262fcae><span class="v-badge v-badge--overlap theme--light" data-v-0348114a><span draggable="false" class="v-chip v-chip--outlined theme--light v-size--default info info--text" data-v-0348114a><span class="v-chip__content"><div class="d-flex justify-center" style="--primary-color:#FF6B00;" data-v-0348114a><a href="#" class="like-dislike-buttons__btn" data-v-0348114a><i aria-hidden="true" class="v-icon notranslate mdi mdi-thumb-up theme--light" data-v-0348114a></i> <small title="53 likes" class="like-dislike-buttons__count" data-v-0348114a>53</small></a> <span class="separator" data-v-0348114a>|</span> <a href="#" class="like-dislike-buttons__btn" data-v-0348114a><i aria-hidden="true" class="v-icon notranslate mdi mdi-thumb-down theme--light" data-v-0348114a></i> <small title="no dislikes" class="like-dislike-buttons__count" data-v-0348114a>0</small></a></div></span></span><span class="v-badge__wrapper"><span aria-atomic="true" aria-label="Badge" aria-live="polite" role="status" class="v-badge__badge error" style="bottom:calc(100% - 12px);left:calc(100% - 12px);right:auto;top:auto;">53</span></span></span></div></div> <div class="col-sm-7 col-md-8 col-lg-10 col-xl-10 col-12" data-v-3262fcae data-v-3262fcae><div class="justify-center icons d-flex col col-12" data-v-11d4c0a4 data-v-11d4c0a4 data-v-3262fcae><a href="https://www.facebook.com/sharer.php?src=sp&amp;u=https%3A%2F%2Fdevhubby.com%2Fthread%2Fhow-to-mock-exception-in-jest&amp;quote=how%20to%20%23mock%20exception%20in%20%23jest%3F&amp;hashtag=%23mywebforum" rel="nofollow noopener" target="_blank" title="Facebook" data-v-11d4c0a4><img src="https://forum-static.fra1.cdn.digitaloceanspaces.com/assets/images/icons/32/fb.png" width="32" height="32" alt="Facebook" data-v-11d4c0a4></a> <!----> <!----> <a href="https://twitter.com/intent/tweet?url=https%3A%2F%2Fdevhubby.com%2Fthread%2Fhow-to-mock-exception-in-jest&amp;text=how%20to%20%23mock%20exception%20in%20%23jest%3F&amp;hashtags=mywebforum" rel="nofollow noopener" target="_blank" title="Twitter" data-v-11d4c0a4><img src="https://forum-static.fra1.cdn.digitaloceanspaces.com/assets/images/icons/32/twitter.png" width="32" height="32" alt="Twitter" data-v-11d4c0a4></a> <a href="https://www.linkedin.com/shareArticle?mini=true&amp;url=https%3A%2F%2Fdevhubby.com%2Fthread%2Fhow-to-mock-exception-in-jest" rel="nofollow noopener" target="_blank" title="LinkedIn" data-v-11d4c0a4><img src="https://forum-static.fra1.cdn.digitaloceanspaces.com/assets/images/icons/32/linkedin.png" width="32" height="32" alt="LinkedIn" data-v-11d4c0a4></a> <a href="https://telegram.me/share/url?url=https%3A%2F%2Fdevhubby.com%2Fthread%2Fhow-to-mock-exception-in-jest" rel="nofollow noopener" target="_blank" title="Telegram" data-v-11d4c0a4><img src="https://forum-static.fra1.cdn.digitaloceanspaces.com/assets/images/icons/32/telegram.png" width="32" height="32" alt="Telegram" data-v-11d4c0a4></a> <a href="https://api.whatsapp.com/send?text=https%3A%2F%2Fdevhubby.com%2Fthread%2Fhow-to-mock-exception-in-jest" rel="nofollow noopener" target="_blank" title="Whatsapp" data-v-11d4c0a4><img src="https://forum-static.fra1.cdn.digitaloceanspaces.com/assets/images/icons/32/whatsapp.png" width="32" height="32" alt="Whatsapp" data-v-11d4c0a4></a> <!----></div></div></div> <div class="row py-0" data-v-3262fcae data-v-3262fcae><div class="text-center col" data-v-3262fcae data-v-3262fcae><a href="/tag/jest" draggable="false" class="mr-2 mb-1 v-chip v-chip--clickable v-chip--label v-chip--link v-chip--outlined v-chip--pill theme--light v-size--small secondary secondary--text" data-v-3262fcae><span class="v-chip__content"><span class="secondary--text text-decoration-none font-weight-bold" data-v-3262fcae><i aria-hidden="true" class="v-icon notranslate mx-0 v-icon--left mdi mdi-pound theme--light secondary--text" style="font-size:16px;" data-v-3262fcae></i>jest
  621.            </span></span></a><a href="/tag/mock" draggable="false" class="mr-2 mb-1 v-chip v-chip--clickable v-chip--label v-chip--link v-chip--outlined v-chip--pill theme--light v-size--small secondary secondary--text" data-v-3262fcae><span class="v-chip__content"><span class="secondary--text text-decoration-none font-weight-bold" data-v-3262fcae><i aria-hidden="true" class="v-icon notranslate mx-0 v-icon--left mdi mdi-pound theme--light secondary--text" style="font-size:16px;" data-v-3262fcae></i>mock
  622.            </span></span></a></div></div></div></div> <!----> <!----></div></div> <hr role="separator" aria-orientation="horizontal" class="v-divider theme--light"> <h4 class="my-4 pl-4 text-capitalize">
  623.            2 answers
  624.          </h4> <hr role="separator" aria-orientation="horizontal" class="v-divider theme--light"> <div tabindex="-1" role="listitem" class="v-list-item theme--light"><div class="v-list-item__icon best-answer"><span class="v-tooltip v-tooltip--bottom"><!----><i aria-hidden="true" class="v-icon notranslate mdi mdi-thumb-up theme--light success--text" style="font-size:40px;"></i></span></div> <div class="row post-row" data-v-145a8bfc data-v-145a8bfc><!----> <!----> <!----> <!----> <!----> <div class="col-sm-3 col-md-2 col-lg-1 col-12" data-v-145a8bfc data-v-145a8bfc><div itemscope="itemscope" itemtype="http://schema.org/Person" class="avatar text-center" data-v-145a8bfc><div><div class="v-avatar" style="height:50px;min-width:50px;width:50px;"><div aria-label="carey" role="img" class="v-image v-responsive theme--light"><div class="v-image__image v-image__image--preload v-image__image--cover" style="background-image:;background-position:center center;"></div><div class="v-responsive__content"></div></div></div></div> <p class="my-0 caption">Member</p> <div><a href="/profile/carey" class="d-inline-flex"><p itemprop="name" class="subtitle-2 mb-0">
  625.        carey
  626.      </p></a></div> <!----></div></div> <div class="col-sm-9 col-md-10 col-lg-11 col-12" data-v-145a8bfc data-v-145a8bfc><div class="pt-0 col col-12" data-v-145a8bfc data-v-145a8bfc><span class="caption" data-v-145a8bfc>by
  627.        <a href="/profile/carey" class="d-inline-flex caption" data-v-145a8bfc>
  628.          carey </a></span>,
  629.      <span class="caption" data-v-145a8bfc>a year ago</span></div> <div class="forum-text ql-viewer" data-v-145a8bfc><p><span class="mention"><span><span><span class="mention"><span><span><span class="ql-mention-denotation-char">@</span>cassandra</span></span></span> </span> </span></span></p><p>In Jest, you can use the <code>jest.fn()</code> method to create a mock function, and then use the <code>.mockImplementation()</code> method to make the function throw an exception when it is called. Here is an example:</p><div style="color:#f8f8f2;background-color:#272822;">
  630. <table style="border-spacing:0;padding:0;margin:0;border:0;"><tbody><tr><td style="vertical-align:top;padding:0;margin:0;border:0;">
  631. <pre tabindex="0" style="color:#f8f8f2;background-color:#272822;"><span style="white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f"> 1
  632. </span><span style="white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f"> 2
  633. </span><span style="white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f"> 3
  634. </span><span style="white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f"> 4
  635. </span><span style="white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f"> 5
  636. </span><span style="white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f"> 6
  637. </span><span style="white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f"> 7
  638. </span><span style="white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f"> 8
  639. </span><span style="white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f"> 9
  640. </span><span style="white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f">10
  641. </span></pre></td>
  642. <td style="vertical-align:top;padding:0;margin:0;border:0;;width:100%">
  643. <pre tabindex="0" style="color:#f8f8f2;background-color:#272822;"><span style="color:#66d9ef">const</span> <span style="color:#a6e22e">myMock</span> <span style="color:#f92672">=</span> <span style="color:#a6e22e">jest</span>.<span style="color:#a6e22e">fn</span>();
  644. <span style="color:#a6e22e">myMock</span>.<span style="color:#a6e22e">mockImplementation</span>(() =&gt; {
  645.  <span style="color:#66d9ef">throw</span> <span style="color:#66d9ef">new</span> Error(<span style="color:#e6db74">&#39;My error message&#39;</span>);
  646. });
  647.  
  648. <span style="color:#66d9ef">try</span> {
  649.  <span style="color:#a6e22e">myMock</span>();
  650. } <span style="color:#66d9ef">catch</span> (<span style="color:#a6e22e">e</span>) {
  651.  <span style="color:#a6e22e">console</span>.<span style="color:#a6e22e">log</span>(<span style="color:#a6e22e">e</span>.<span style="color:#a6e22e">message</span>); <span style="color:#75715e">// &#34;My error message&#34;
  652. </span><span style="color:#75715e"></span>}
  653. </pre></td></tr></tbody></table>
  654. </div>
  655. <p><br/></p><p>You can also use <code>jest.fn().mockImplementationOnce()</code> to only throw the exception on the first call, and then have the mock function return normally on subsequent calls.</p></div></div> <!----> <div class="text-center text-lg-left text-md-left text-xl-left text-sm-left col-sm-5 col-md-4 col-lg-2 col-xl-2 col-12" data-v-145a8bfc data-v-145a8bfc><div class="like-dislike-buttons pt-3" data-v-0348114a data-v-145a8bfc><span class="v-badge v-badge--overlap theme--light" data-v-0348114a><span draggable="false" class="v-chip v-chip--outlined theme--light v-size--default info info--text" data-v-0348114a><span class="v-chip__content"><div class="d-flex justify-center" style="--primary-color:#FF6B00;" data-v-0348114a><a href="#" class="like-dislike-buttons__btn" data-v-0348114a><i aria-hidden="true" class="v-icon notranslate mdi mdi-thumb-up theme--light" data-v-0348114a></i> <small title="2 likes" class="like-dislike-buttons__count" data-v-0348114a>2</small></a> <span class="separator" data-v-0348114a>|</span> <a href="#" class="like-dislike-buttons__btn" data-v-0348114a><i aria-hidden="true" class="v-icon notranslate mdi mdi-thumb-down theme--light" data-v-0348114a></i> <small title="no dislikes" class="like-dislike-buttons__count" data-v-0348114a>0</small></a></div></span></span><span class="v-badge__wrapper"><span aria-atomic="true" aria-label="Badge" aria-live="polite" role="status" class="v-badge__badge error" style="bottom:calc(100% - 12px);left:calc(100% - 12px);right:auto;top:auto;">2</span></span></span></div></div> <!----> <div class="col col-12" data-v-145a8bfc data-v-145a8bfc><hr role="separator" aria-orientation="horizontal" class="v-divider theme--light" data-v-145a8bfc></div></div></div><div tabindex="-1" role="listitem" class="v-list-item theme--light"><!----> <div class="row post-row" data-v-145a8bfc data-v-145a8bfc><div class="py-0 col col-12" data-v-145a8bfc data-v-145a8bfc><div data-v-145a8bfc><!----></div></div> <!----> <!----> <!----> <!----> <div class="col-sm-3 col-md-2 col-lg-1 col-12" data-v-145a8bfc data-v-145a8bfc><div itemscope="itemscope" itemtype="http://schema.org/Person" class="avatar text-center" data-v-145a8bfc><div><div class="v-avatar" style="height:50px;min-width:50px;width:50px;"><div aria-label="trenton_kirlin" role="img" class="v-image v-responsive theme--light"><div class="v-image__image v-image__image--preload v-image__image--cover" style="background-image:;background-position:center center;"></div><div class="v-responsive__content"></div></div></div></div> <p class="my-0 caption">Member</p> <div><a href="/profile/trenton_kirlin" class="d-inline-flex"><p itemprop="name" class="subtitle-2 mb-0">
  656.        trenton_kirlin
  657.      </p></a></div> <!----></div></div> <div class="col-sm-9 col-md-10 col-lg-11 col-12" data-v-145a8bfc data-v-145a8bfc><div class="pt-0 col col-12" data-v-145a8bfc data-v-145a8bfc><span class="caption" data-v-145a8bfc>by
  658.        <a href="/profile/trenton_kirlin" class="d-inline-flex caption" data-v-145a8bfc>
  659.          trenton_kirlin </a></span>,
  660.      <span class="caption" data-v-145a8bfc>3 months ago</span></div> <div class="forum-text ql-viewer" data-v-145a8bfc><p><span class="mention"><span><span><span class="mention"><span><span><span class="ql-mention-denotation-char">@</span>cassandra</span></span></span> </span> </span></span></p><p>Here&#39;s an example of using jest.fn().mockImplementation() and jest.fn().mockImplementationOnce() to mock an exception in Jest:</p><div style="color:#f8f8f2;background-color:#272822;">
  661. <table style="border-spacing:0;padding:0;margin:0;border:0;"><tbody><tr><td style="vertical-align:top;padding:0;margin:0;border:0;">
  662. <pre tabindex="0" style="color:#f8f8f2;background-color:#272822;"><span style="white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f"> 1
  663. </span><span style="white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f"> 2
  664. </span><span style="white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f"> 3
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  669. </span><span style="white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f"> 8
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  688. </span><span style="white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f">27
  689. </span><span style="white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f">28
  690. </span><span style="white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f">29
  691. </span></pre></td>
  692. <td style="vertical-align:top;padding:0;margin:0;border:0;;width:100%">
  693. <pre tabindex="0" style="color:#f8f8f2;background-color:#272822;">// Mock function to throw an exception
  694. const myMock = jest.fn().mockImplementation(() =&gt; {
  695.  throw new Error(&#39;My error message&#39;);
  696. });
  697.  
  698. // Call the mock function and catch the exception
  699. try {
  700.  myMock();
  701. } catch (e) {
  702.  console.log(e.message); // &#34;My error message&#34;
  703. }
  704.  
  705. // Mock function to throw an exception only on the first call
  706. const myMockOnce = jest
  707.  .fn()
  708.  .mockImplementationOnce(() =&gt; {
  709.    throw new Error(&#39;My error message&#39;);
  710.  })
  711.  .mockReturnValue(&#39;Normal return value on subsequent calls&#39;);
  712.  
  713. // Call the mock function multiple times
  714. try {
  715.  myMockOnce(); // Throws an exception
  716. } catch (e) {
  717.  console.log(e.message); // &#34;My error message&#34;
  718. }
  719.  
  720. console.log(myMockOnce()); // &#34;Normal return value on subsequent calls&#34;
  721. console.log(myMockOnce()); // &#34;Normal return value on subsequent calls&#34;
  722. </pre></td></tr></tbody></table>
  723. </div>
  724. <p><br/></p><p>In this example, the <code>myMock</code> mock function is created using jest.fn().mockImplementation() with a function that throws an error. When the mock function is called, it will throw the specified error.</p><p><br/></p><p>The <code>myMockOnce</code> mock function is created using jest.fn().mockImplementationOnce(). The first time the mock function is called, it will throw an error. On subsequent calls, it will return the normal value specified by mockReturnValue().</p></div></div> <!----> <div class="text-center text-lg-left text-md-left text-xl-left text-sm-left col-sm-5 col-md-4 col-lg-2 col-xl-2 col-12" data-v-145a8bfc data-v-145a8bfc><div class="like-dislike-buttons pt-3" data-v-0348114a data-v-145a8bfc><span class="v-badge v-badge--overlap theme--light" data-v-0348114a><span draggable="false" class="v-chip v-chip--outlined theme--light v-size--default info info--text" data-v-0348114a><span class="v-chip__content"><div class="d-flex justify-center" style="--primary-color:#FF6B00;" data-v-0348114a><a href="#" class="like-dislike-buttons__btn" data-v-0348114a><i aria-hidden="true" class="v-icon notranslate mdi mdi-thumb-up theme--light" data-v-0348114a></i> <small title="no likes" class="like-dislike-buttons__count" data-v-0348114a>0</small></a> <span class="separator" data-v-0348114a>|</span> <a href="#" class="like-dislike-buttons__btn" data-v-0348114a><i aria-hidden="true" class="v-icon notranslate mdi mdi-thumb-down theme--light" data-v-0348114a></i> <small title="no dislikes" class="like-dislike-buttons__count" data-v-0348114a>0</small></a></div></span></span><span class="v-badge__wrapper"><span aria-atomic="true" aria-label="Badge" aria-live="polite" role="status" class="v-badge__badge error" style="bottom:calc(100% - 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For Apache servers, you can use the provided .htaccess file. For other servers, consult their respective documentation.\n\u003C\u002Fli\u003E\u003Cli\u003EMake sure that the necessary PHP extensions like mysqli, mbstring, and curl are enabled in your PHP configuration.\n\u003C\u002Fli\u003E\u003Cli\u003EVerify that your server meets the minimum requirements for running CodeIgniter. These requirements include PHP version 7.2 or newer and the availability of the PHP extensions mentioned earlier.\n\u003C\u002Fli\u003E\u003C\u002Fol\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EBy following these instructions, you should be able to successfully install CodeIgniter on your web server and begin developing your web applications using this powerful PHP framework.\u003C\u002Fp\u003E",is_moderated:b,username:"zita",user_active:a,created:"2024-03-29T08:03:28Z"};ay.order=a;ay.description=v;ay.slug="php";az.id=Y;az.name=j;az.messages=5284;az.threads=3858;az.meta_title=j;az.meta_description=j;az.children=e;az.icon="category\u002F8bc6a538-1878-494b-a68f-d75c0788e762\u002Fjavascript-logo.png";az.is_public=c;az.last_post={id:218561,message:"\u003Cp\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"ql-mention-denotation-char\"\u003E@\u003C\u002Fspan\u003Eyadira.tillman\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E \u003C\u002Fspan\u003E \u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fp\u003E\u003Cp\u003EIt seems I may have missed some necessary information in my previous response. Let me provide a more detailed explanation on how to use dayjs in TypeScript including setting up TypeScript configuration and using it in a project.\u003C\u002Fp\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EHere are the steps:\u003C\u002Fp\u003E\u003Col\u003E\u003Cli\u003EFirst, install the dayjs library and the TypeScript compiler if you haven&#39;t already:\u003C\u002Fli\u003E\u003C\u002Fol\u003E\u003Cpre class=\"code-block ql-syntax\" id=\"code-4pgoro2\"\u003Enpm install dayjs\nnpm install typescript --save-dev\n\u003C\u002Fpre\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Col\u003E\u003Cli\u003ESet up a TypeScript configuration file (tsconfig.json) in your project folder. You can create this file with the following command:\u003C\u002Fli\u003E\u003C\u002Fol\u003E\u003Cpre class=\"code-block ql-syntax\" id=\"code-y6y59iw\"\u003Enpx tsc --init\n\u003C\u002Fpre\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Col\u003E\u003Cli\u003EIn the tsconfig.json file, ensure you have the following configurations set for module resolution:\u003C\u002Fli\u003E\u003C\u002Fol\u003E\u003Cpre class=\"code-block ql-syntax\" id=\"code-a441w5c\"\u003E&#34;moduleResolution&#34;: &#34;Node&#34;,\n&#34;esModuleInterop&#34;: true,\n\u003C\u002Fpre\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Col\u003E\u003Cli\u003EImport dayjs in your TypeScript file:\u003C\u002Fli\u003E\u003C\u002Fol\u003E\u003Cpre class=\"code-block ql-syntax\" id=\"code-oakom5o\"\u003Eimport dayjs from &#39;dayjs&#39;;\n\u003C\u002Fpre\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Col\u003E\u003Cli\u003EUse dayjs as needed in your code:\u003C\u002Fli\u003E\u003C\u002Fol\u003E\u003Cpre class=\"code-block ql-syntax\" id=\"code-tjf3ag7\"\u003Econst date = dayjs(&#39;2022-01-01&#39;);\nconsole.log(date.format(&#39;MMMM DD YYYY&#39;));  \u002F\u002F January 01 2022\n\u003C\u002Fpre\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Col\u003E\u003Cli\u003EIf you want to have type definitions for dayjs, make sure to also install the @types\u002Fdayjs package:\u003C\u002Fli\u003E\u003C\u002Fol\u003E\u003Cpre class=\"code-block ql-syntax\" id=\"code-3s597fj\"\u003Enpm install @types\u002Fdayjs --save-dev\n\u003C\u002Fpre\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EFollowing these steps will help you incorporate dayjs into your TypeScript project seamlessly. If you encounter any issues or have further questions, please let me know.\u003C\u002Fp\u003E",is_moderated:b,username:"eric.hamill",user_active:a,created:"2024-03-26T15:42:26Z"};az.order=a;az.description=j;az.slug=am;aA.id=34529;aA.name=w;aA.messages=1827;aA.threads=1223;aA.meta_title=w;aA.meta_description=w;aA.children=e;aA.icon="category\u002Fc450d489-f776-42ad-a307-a876104daf91\u002Fsql.png";aA.is_public=c;aA.last_post={id:218683,message:"\u003Cp\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"ql-mention-denotation-char\"\u003E@\u003C\u002Fspan\u003Edaisha.padberg\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E \u003C\u002Fspan\u003E \u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fp\u003E\u003Cp\u003ETo store dates in InfluxDB, you can follow these steps:\u003C\u002Fp\u003E\u003Col\u003E\u003Cli\u003EUse the InfluxDB line protocol format, which includes the measurement, field key, field value, and timestamp.\u003C\u002Fli\u003E\u003Cli\u003E\u003Cstrong\u003ESpecify the date as a timestamp in the format YYYY-MM-DDTHH\u003C\u002Fstrong\u003E:MM:SS.FFFFFFFFZ.\u003C\u002Fli\u003E\u003Cli\u003EWrite the data to the InfluxDB database using the line protocol syntax.\u003C\u002Fli\u003E\u003C\u002Fol\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EExample:\nLet&#39;s say you want to store a temperature reading with the timestamp of &#34;2022-12-25 12:00:00&#34; in a measurement called &#34;temperature&#34;.\u003C\u002Fp\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EUsing the line protocol format, the data point would look like this:\u003C\u002Fp\u003E\u003Cpre class=\"code-block ql-syntax\" id=\"code-plycinh\"\u003Etemperature value=25.6 1640419200000000000\n\u003C\u002Fpre\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EIn this example:\u003C\u002Fp\u003E\u003Cul\u003E\u003Cli\u003E\u003Cstrong\u003EMeasurement\u003C\u002Fstrong\u003E: temperature\u003C\u002Fli\u003E\u003Cli\u003EField key: value\u003C\u002Fli\u003E\u003Cli\u003EField value: 25.6\u003C\u002Fli\u003E\u003Cli\u003E\u003Cstrong\u003ETimestamp\u003C\u002Fstrong\u003E: 1640419200000000000 (equivalent to &#34;2022-12-25 12:00:00&#34;)\u003C\u002Fli\u003E\u003C\u002Ful\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EBy following this format, you can successfully store dates in InfluxDB along with other data points. Ensure that you adjust the timestamp values as needed to represent the specific date and time you want to store.\u003C\u002Fp\u003E",is_moderated:b,username:"jesse",user_active:a,created:"2024-03-28T09:56:35Z"};aA.order=a;aA.description=w;aA.slug="sql";aB.id=34530;aB.name=x;aB.messages=1365;aB.threads=980;aB.meta_title=x;aB.meta_description=x;aB.children=e;aB.icon="category\u002F6a57ef72-267d-44d0-b16f-0f5992a25150\u002Fgo2.png";aB.is_public=c;aB.last_post={id:210310,message:"\u003Cp\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"ql-mention-denotation-char\"\u003E@\u003C\u002Fspan\u003Eramon\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E \u003C\u002Fspan\u003E \u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fp\u003E\u003Cp\u003EAlternatively, you can also use the strconv package to convert the float64 value to a string and then concatenate it with the original string. Here&#39;s an example:\u003C\u002Fp\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003E1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\u003C\u002Fp\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003Epackage main\u003C\u002Fp\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003Eimport (\n&#34;fmt&#34;\n&#34;strconv&#34;\n)\u003C\u002Fp\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003Efunc main() {\nmyString := &#34;The float value is: &#34;\nmyFloat := 3.14159\u003C\u002Fp\u003E\u003Cpre class=\"code-block ql-syntax\" id=\"code-0i4q45m\"\u003E\u002F\u002F Convert float to string using strconv.FormatFloat\nfloatValue := strconv.FormatFloat(myFloat, &#39;f&#39;, 2, 64)\n\n\u002F\u002F Concatenate string and float\nresult := myString + floatValue\n\nfmt.Println(result)\n\u003C\u002Fpre\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003E}\u003C\u002Fp\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EIn the above example, we import the strconv package and use the strconv.FormatFloat function to convert the float64 value to a string. The &#39;f&#39; format parameter specifies that we want to format the float with decimal places. The &#39;2&#39; parameter specifies that we want to preserve 2 decimal places. The &#39;64&#39; parameter specifies the bit size of the float64 value.\u003C\u002Fp\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EAfter converting the float64 value to a string, we can concatenate it with the original string using the + operator and store the result in the result variable. The output of the above program will be:\u003C\u002Fp\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003E1\u003C\u002Fp\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EThe float value is: 3.14\u003C\u002Fp\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003ENote that when using strconv.FormatFloat, you have more control over the format of the float value string compared to fmt.Sprintf. You can adjust the number of decimal places by changing the second argument (&#39;f&#39;) and adjust the bit size of the float64 value by changing the last argument (64).\u003C\u002Fp\u003E",is_moderated:b,username:"hailie",user_active:a,created:"2024-01-17T15:05:46Z"};aB.order=a;aB.description=x;aB.slug="golang";aC.id=34531;aC.name=y;aC.messages=1451;aC.threads=849;aC.meta_title=y;aC.meta_description=y;aC.children=e;aC.icon="category\u002Ff079ddf7-48d4-4aa3-b2b8-9bf568c958be\u002Fhtmlcss.png";aC.is_public=c;aC.last_post={id:209290,message:"\u003Cp\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"ql-mention-denotation-char\"\u003E@\u003C\u002Fspan\u003Echadrick_stanton\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E \u003C\u002Fspan\u003E \u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fp\u003E\u003Cp\u003ETo avoid CORS (Cross-Origin Resource Sharing) errors when drawing an image onto a canvas, you need to ensure that:\u003C\u002Fp\u003E\u003Col\u003E\u003Cli\u003E\u003Cstrong\u003EServe the image from the same origin as your webpage\u003C\u002Fstrong\u003E: The image should be from the same domain, subdomain, and port as your web page. If the image is hosted on a different domain, you can either upload it to your own server or use a proxy server to fetch the image from the other domain and serve it from your own domain.\n\u003C\u002Fli\u003E\u003Cli\u003E\u003Cstrong\u003ESet the appropriate CORS headers on the server\u003C\u002Fstrong\u003E: If you are serving the image from a different domain, you need to configure the server to include the appropriate CORS headers in the response. The headers should allow the image to be requested from your domain.\n\u003C\u002Fli\u003E\u003C\u002Fol\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EHere&#39;s an example of how to set CORS headers in different server-side languages:\u003C\u002Fp\u003E\u003Cul\u003E\u003Cli\u003EExpress.js (Node.js):\u003C\u002Fli\u003E\u003C\u002Ful\u003E\u003Cpre class=\"code-block ql-syntax\" id=\"code-6u48n45\"\u003Eapp.get(&#39;\u002Fimage&#39;, function(req, res) {\n  res.set(&#39;Access-Control-Allow-Origin&#39;, &#39;*&#39;); \u002F\u002F Replace * with your domain\n  res.sendFile(__dirname + &#39;\u002Fpath\u002Fto\u002Fimage.jpg&#39;);\n});\n\u003C\u002Fpre\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cul\u003E\u003Cli\u003EPHP:\u003C\u002Fli\u003E\u003C\u002Ful\u003E\u003Cpre class=\"code-block ql-syntax\" id=\"code-bjtafvo\"\u003Eheader(&#39;Access-Control-Allow-Origin: *&#39;); \u002F\u002F Replace * with your domain\nheader(&#39;Content-Type: image\u002Fjpeg&#39;);\nreadfile(&#39;\u002Fpath\u002Fto\u002Fimage.jpg&#39;);\n\u003C\u002Fpre\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EBy serving the image from the same origin as your webpage or setting the appropriate CORS headers, you should be able to avoid CORS errors when drawing the image onto a canvas.\u003C\u002Fp\u003E",is_moderated:b,username:"beatrice.lesch",user_active:a,created:"2024-01-10T23:45:24Z"};aC.order=a;aC.description=y;aC.slug="html-css";aD.id=34532;aD.name=z;aD.messages=340;aD.threads=223;aD.meta_title=z;aD.meta_description=z;aD.children=e;aD.icon="category\u002F375757a5-d49a-485d-94fc-d28d725ae104\u002Fruby2.png";aD.is_public=c;aD.last_post={id:212726,message:"\u003Cp\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"ql-mention-denotation-char\"\u003E@\u003C\u002Fspan\u003Egideon.hauck\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E \u003C\u002Fspan\u003E \u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fp\u003E\u003Cp\u003EIn addition to the code above, you can also use the \u003Ccode\u003Ecreate\u003C\u002Fcode\u003E method with a block to insert data into a database in a more concise way:\u003C\u002Fp\u003E\u003Cpre class=\"code-block ql-syntax\" id=\"code-97jubfb\"\u003EArticle.create do |article|\n  article.title = &#34;My Article Title&#34;\n  article.content = &#34;My Article Content&#34;\nend\n\u003C\u002Fpre\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EThis is especially useful when you want to perform additional actions or validations before saving the record.\u003C\u002Fp\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EYou can also use the \u003Ccode\u003Eimport\u003C\u002Fcode\u003E method to efficiently insert multiple records into the database at once. This method bypasses the lifecycle callbacks and validations, making it much faster than individual \u003Ccode\u003Ecreate\u003C\u002Fcode\u003E or \u003Ccode\u003Esave\u003C\u002Fcode\u003E operations. Here&#39;s an example:\u003C\u002Fp\u003E\u003Cpre class=\"code-block ql-syntax\" id=\"code-9rl85ye\"\u003Earticles = [\n  { title: &#34;Article 1&#34;, content: &#34;Content 1&#34; },\n  { title: &#34;Article 2&#34;, content: &#34;Content 2&#34; },\n  { title: &#34;Article 3&#34;, content: &#34;Content 3&#34; }\n]\n\nArticle.import(articles)\n\u003C\u002Fpre\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EThis will insert the specified records into the database without triggering validations or callbacks. However, keep in mind that the data directly goes into the database, so make sure it&#39;s properly sanitized and validated before using this method.\u003C\u002Fp\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003ERemember to configure your database connection in config\u002Fdatabase.yml file before inserting data into the database.\u003C\u002Fp\u003E",is_moderated:b,username:"hortense_donnelly",user_active:a,created:"2024-02-12T11:22:34Z"};aD.order=a;aD.description=z;aD.slug="ruby";aE.id=34533;aE.name=A;aE.messages=2775;aE.threads=at;aE.meta_title=A;aE.meta_description=A;aE.children=e;aE.icon="category\u002F1c348406-1653-4887-b583-7489de2310f3\u002Fpython.png";aE.is_public=c;aE.last_post={id:218245,message:"\u003Cp\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"ql-mention-denotation-char\"\u003E@\u003C\u002Fspan\u003Etoy.waelchi\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E \u003C\u002Fspan\u003E \u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fp\u003E\u003Cp\u003EIf Python is unable to find the matplotlib library, you may need to install it using pip. Open your command line interface and run the following command:\u003C\u002Fp\u003E\u003Cpre class=\"code-block ql-syntax\" id=\"code-sw9lxu9\"\u003Epip install matplotlib\n\u003C\u002Fpre\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EIf you are using a virtual environment, make sure it is activated before running the command.\u003C\u002Fp\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EOnce matplotlib is installed, you should be able to import it in a Python shell without any issues. You can test this by opening a Python shell and running:\u003C\u002Fp\u003E\u003Cpre class=\"code-block ql-syntax\" id=\"code-kfhq4sz\"\u003Eimport matplotlib\n\u003C\u002Fpre\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EIf no errors occur, this means matplotlib has been successfully installed and can be imported in your Python programs.\u003C\u002Fp\u003E",is_moderated:b,username:au,user_active:a,created:"2024-03-22T23:04:20Z"};aE.order=a;aE.description=A;aE.slug="python";aF.id=34534;aF.name=B;aF.messages=1746;aF.threads=1087;aF.meta_title=B;aF.meta_description=B;aF.children=e;aF.icon="category\u002F3f08ec78-9350-4d01-9395-77978dfce7e1\u002Fjava.png";aF.is_public=c;aF.last_post={id:218641,message:"\u003Cp\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"ql-mention-denotation-char\"\u003E@\u003C\u002Fspan\u003Edasia\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E \u003C\u002Fspan\u003E \u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fp\u003E\u003Cp\u003ETo insert an image URL into a database using JSP and Hibernate, you can follow these steps:\u003C\u002Fp\u003E\u003Col\u003E\u003Cli\u003ECreate a Java entity class that represents the data you want to store in the database. Include a field in the entity class to store the image URL.\u003C\u002Fli\u003E\u003C\u002Fol\u003E\u003Cpre class=\"code-block ql-syntax\" id=\"code-i4zr9x5\"\u003E@Entity\npublic class Product {\n    @Id\n    @GeneratedValue(strategy = GenerationType.IDENTITY)\n    private Long id;\n\n    private String name;\n    private String imageUrl;\n\n    \u002F\u002F Getters and setters\n}\n\u003C\u002Fpre\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Col\u003E\u003Cli\u003ECreate a JSP form that allows users to input the image URL.\u003C\u002Fli\u003E\u003C\u002Fol\u003E\u003Cpre class=\"code-block ql-syntax\" id=\"code-hhg0she\"\u003E&lt;form action=&#34;insertImage.jsp&#34; method=&#34;post&#34;&gt;\n    Name: &lt;input type=&#34;text&#34; name=&#34;name&#34;&gt;&lt;br&gt;\n    Image URL: &lt;input type=&#34;text&#34; name=&#34;imageUrl&#34;&gt;&lt;br&gt;\n    &lt;input type=&#34;submit&#34; value=&#34;Submit&#34;&gt;\n&lt;\u002Fform&gt;\n\u003C\u002Fpre\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Col\u003E\u003Cli\u003ECreate a servlet (or JSP) that handles the form submission and inserts the data into the database using Hibernate.\u003C\u002Fli\u003E\u003C\u002Fol\u003E\u003Cpre class=\"code-block ql-syntax\" id=\"code-4rg02zc\"\u003E@WebServlet(&#34;\u002FinsertImage&#34;)\npublic class InsertImageServlet extends HttpServlet {\n    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {\n        String name = request.getParameter(&#34;name&#34;);\n        String imageUrl = request.getParameter(&#34;imageUrl&#34;);\n\n        Product product = new Product();\n        product.setName(name);\n        product.setImageUrl(imageUrl);\n\n        Session session = HibernateUtil.getSessionFactory().openSession();\n        session.beginTransaction();\n        session.save(product);\n        session.getTransaction().commit();\n        session.close();\n\n        response.sendRedirect(&#34;success.jsp&#34;);\n    }\n}\n\u003C\u002Fpre\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Col\u003E\u003Cli\u003EConfigure Hibernate to connect to your database and set up the necessary mappings for the entity class.\n\u003C\u002Fli\u003E\u003Cli\u003ERun your application and navigate to the form in your browser. Enter the name and image URL, and submit the form to insert the data into the database.\n\u003C\u002Fli\u003E\u003C\u002Fol\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EThis is a basic example to demonstrate how to insert an image URL into a database using JSP and Hibernate. Depending on your specific requirements, you may need to handle image file uploads, manage file storage, and display images in your application.\u003C\u002Fp\u003E",is_moderated:b,username:"kavon",user_active:a,created:"2024-03-27T08:32:26Z"};aF.order=a;aF.description=B;aF.slug="java";aG.id=34535;aG.name=C;aG.messages=956;aG.threads=733;aG.meta_title=C;aG.meta_description=C;aG.children=e;aG.icon="category\u002F427d0e6e-1883-44dd-aa69-96672f1362e5\u002Fc.png";aG.is_public=c;aG.last_post={id:216378,message:"\u003Cp\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"ql-mention-denotation-char\"\u003E@\u003C\u002Fspan\u003Ekyla.kuvalis\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E \u003C\u002Fspan\u003E \u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fp\u003E\u003Cp\u003EIf you want to generalize the code to handle uppercase letters as well, you can modify the \u003Ccode\u003EisAnagram\u003C\u002Fcode\u003E function using the \u003Ccode\u003Etolower\u003C\u002Fcode\u003E standard library function to convert the characters to lowercase before processing. Here is the modified \u003Ccode\u003EisAnagram\u003C\u002Fcode\u003E function to handle both uppercase and lowercase letters:\u003C\u002Fp\u003E\u003Cpre class=\"code-block ql-syntax\" id=\"code-mqyh6hk\"\u003Eint isAnagram(char *s1, char *s2) {\n    int i, count[26] = {0};\n    int len1 = strlen(s1);\n    int len2 = strlen(s2);\n    if (len1 != len2) {\n        return 0;\n    }\n    for (i = 0; i &lt; len1; i++) {\n        count[tolower(s1[i])-&#39;a&#39;]++;\n        count[tolower(s2[i])-&#39;a&#39;]--;\n    }\n    for (i = 0; i &lt; 26; i++) {\n        if (count[i] != 0) {\n            return 0;\n        }\n    }\n    return 1;\n}\n\u003C\u002Fpre\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EWith this modification, the code will now handle mixed cases of letters and consider them as anagrams if the counts of characters in both strings match, irrespective of their case.\u003C\u002Fp\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003ERemember to include \u003Ccode\u003E&lt;ctype.h&gt;\u003C\u002Fcode\u003E header to use the \u003Ccode\u003Etolower\u003C\u002Fcode\u003E function.\u003C\u002Fp\u003E",is_moderated:b,username:"jennifer",user_active:a,created:"2024-03-09T16:34:24Z"};aG.order=a;aG.description=C;aG.slug="c-c";aH.id=34536;aH.name=D;aH.messages=553;aH.threads=428;aH.meta_title=D;aH.meta_description=D;aH.children=e;aH.icon="category\u002Fe1951c3a-5f15-4bff-b2a1-43f9148ea154\u002Fswift.png";aH.is_public=c;aH.last_post={id:218374,message:"\u003Cp\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"ql-mention-denotation-char\"\u003E@\u003C\u002Fspan\u003Ehulda.flatley\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E \u003C\u002Fspan\u003E \u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fp\u003E\u003Cp\u003ETo map a string value to an enum in Swift, you can use a switch statement to match the string value to the associated enum case. Here is an example:\u003C\u002Fp\u003E\u003Cpre class=\"code-block ql-syntax\" id=\"code-lerhf1g\"\u003Eenum Direction: String {\n    case north\n    case south\n    case east\n    case west\n}\n\nfunc getDirection(from string: String) -&gt; Direction? {\n    switch string {\n    case &#34;north&#34;:\n        return Direction.north\n    case &#34;south&#34;:\n        return Direction.south\n    case &#34;east&#34;:\n        return Direction.east\n    case &#34;west&#34;:\n        return Direction.west\n    default:\n        return nil\n    }\n}\n\n\u002F\u002F Using the getDirection function\nif let direction = getDirection(from: &#34;north&#34;) {\n    print(&#34;Direction is (direction)&#34;)\n} else {\n    print(&#34;Invalid direction&#34;)\n}\n\u003C\u002Fpre\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EIn this example, we have an enum \u003Ccode\u003EDirection\u003C\u002Fcode\u003E with cases representing different directions. The \u003Ccode\u003EgetDirection\u003C\u002Fcode\u003E function takes a string input and returns the corresponding enum case using a switch statement. You can then use this function to map a string to its corresponding enum case.\u003C\u002Fp\u003E",is_moderated:b,username:"percy",user_active:a,created:"2024-03-24T08:54:30Z"};aH.order=a;aH.description=D;aH.slug="swift";aI.id=36177;aI.name=ac;aI.messages=13107;aI.threads=10006;aI.meta_title=aJ;aI.meta_description=aJ;aI.children=e;aI.icon="category\u002F25bf8071-d225-4b00-add3-5ce12dedc414\u002Fic-2dev.png";aI.is_public=c;aI.last_post={id:218710,message:"\u003Cp\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"ql-mention-denotation-char\"\u003E@\u003C\u002Fspan\u003Ebeatrice.lesch\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E \u003C\u002Fspan\u003E \u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fp\u003E\u003Cp\u003EYou can also set the size of an array dynamically at runtime by using the SetLength function. Here&#39;s an example:\u003C\u002Fp\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003E1\n2\n3\n4\n5\n6\n7\u003C\u002Fp\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003Evar\nA: array of Integer;\nN: Integer;\nbegin\nN := 100;\nSetLength(A, N); \u002F\u002F Array A is now of size N\nend;\u003C\u002Fp\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EYou can then access and manipulate the elements of the array A just like a regular array.\u003C\u002Fp\u003E",is_moderated:b,username:"taya_block",user_active:a,created:"2024-03-28T22:00:28Z"};aI.order=a;aI.description=ac;aI.slug="other";return {layout:al,data:[{sanitizedMessage:i,thread:{id:90749,name:i,message:"\u003Cp\u003Ehow to mock exception in jest?\u003C\u002Fp\u003E",formatted_message:d,image:"thread\u002F2023\u002Ff0246946-66aa-4613-83e9-fdfc09ce8e6f.png",hash_tags:"[\"jest\",\"mock\"]",tags:["jest","mock","mywebforum"],category:{id:Y,name:j,messages:a,threads:a,meta_title:d,meta_description:d,children:e,icon:d,is_public:c,order:a,description:j,slug:am},category_id:Y,slug:Z,best_answer_id:an,likes:53,dislikes:a,is_closed:c,is_pinned:c,is_moderated:b,username:"cassandra",user_active:f,role:g,user_avatar:"avatar\u002Fcassandra\u002F313098749.jpg",created:"2022-12-27T04:01:54Z"},relatedThreads:[{id:86112,title:ao,text:ao,avatar:"avatar\u002Frollin\u002F230028675.jpg",role:g,slug:"how-to-mock-useeffect-in-jest",username:"rollin",created:"2022-11-14T22:59:00Z"},{id:90756,title:ap,text:ap,avatar:"avatar\u002Fsamara\u002Favatar_4619.jpg",role:g,slug:"how-to-mock-eventemitter-in-jest",username:"samara",created:"2022-12-27T04:12:12Z"},{id:90678,title:aq,text:aq,avatar:"avatar\u002Ftina\u002Favatar_0966.jpg",role:g,slug:"how-to-mock-foreach-in-jest",username:"tina",created:"2022-12-26T14:00:37Z"},{id:85680,title:ar,text:ar,avatar:"avatar\u002Fcasey\u002Fanimal0148.gif",role:g,slug:"how-to-mock-a-component-in-jest",username:"casey",created:"2022-11-11T04:28:58Z"},{id:90768,title:as,text:as,avatar:"avatar\u002Fewald\u002F3068.jpg",role:g,slug:"how-to-mock-lodash-in-jest",username:"ewald",created:"2022-12-27T04:31:20Z"}],socialSettings:{id:at,size:a,facebook:b,vk:c,ok:c,linkedin:b,telegram:b,whatsapp:b,pocket:c,twitter:b,active:b},page:f,totals:f,postsTotal:_,posts:[{id:an,message:"\u003Cp\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"ql-mention-denotation-char\"\u003E@\u003C\u002Fspan\u003Ecassandra\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E \u003C\u002Fspan\u003E \u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fp\u003E\u003Cp\u003EIn Jest, you can use the \u003Ccode\u003Ejest.fn()\u003C\u002Fcode\u003E method to create a mock function, and then use the \u003Ccode\u003E.mockImplementation()\u003C\u002Fcode\u003E method to make the function throw an exception when it is called. Here is an example:\u003C\u002Fp\u003E\u003Cpre class=\"code-block ql-syntax\" id=\"code-ociy977\" language=\"javascript\"\u003Econst myMock = jest.fn();\nmyMock.mockImplementation(() =&gt; {\n  throw new Error(&#39;My error message&#39;);\n});\n\ntry {\n  myMock();\n} catch (e) {\n  console.log(e.message); \u002F\u002F &#34;My error message&#34;\n}\n\u003C\u002Fpre\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EYou can also use \u003Ccode\u003Ejest.fn().mockImplementationOnce()\u003C\u002Fcode\u003E to only throw the exception on the first call, and then have the mock function return normally on subsequent calls.\u003C\u002Fp\u003E",formatted_message:"\u003Cp\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"ql-mention-denotation-char\"\u003E@\u003C\u002Fspan\u003Ecassandra\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E \u003C\u002Fspan\u003E \u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fp\u003E\u003Cp\u003EIn Jest, you can use the \u003Ccode\u003Ejest.fn()\u003C\u002Fcode\u003E method to create a mock function, and then use the \u003Ccode\u003E.mockImplementation()\u003C\u002Fcode\u003E method to make the function throw an exception when it is called. Here is an example:\u003C\u002Fp\u003E\u003Cdiv style=\"color:#f8f8f2;background-color:#272822;\"\u003E\n\u003Ctable style=\"border-spacing:0;padding:0;margin:0;border:0;\"\u003E\u003Ctbody\u003E\u003Ctr\u003E\u003Ctd style=\"vertical-align:top;padding:0;margin:0;border:0;\"\u003E\n\u003Cpre tabindex=\"0\" style=\"color:#f8f8f2;background-color:#272822;\"\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E 1\n\u003C\u002Fspan\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E 2\n\u003C\u002Fspan\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E 3\n\u003C\u002Fspan\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E 4\n\u003C\u002Fspan\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E 5\n\u003C\u002Fspan\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E 6\n\u003C\u002Fspan\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E 7\n\u003C\u002Fspan\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E 8\n\u003C\u002Fspan\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E 9\n\u003C\u002Fspan\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E10\n\u003C\u002Fspan\u003E\u003C\u002Fpre\u003E\u003C\u002Ftd\u003E\n\u003Ctd style=\"vertical-align:top;padding:0;margin:0;border:0;;width:100%\"\u003E\n\u003Cpre tabindex=\"0\" style=\"color:#f8f8f2;background-color:#272822;\"\u003E\u003Cspan style=\"color:#66d9ef\"\u003Econst\u003C\u002Fspan\u003E \u003Cspan style=\"color:#a6e22e\"\u003EmyMock\u003C\u002Fspan\u003E \u003Cspan style=\"color:#f92672\"\u003E=\u003C\u002Fspan\u003E \u003Cspan style=\"color:#a6e22e\"\u003Ejest\u003C\u002Fspan\u003E.\u003Cspan style=\"color:#a6e22e\"\u003Efn\u003C\u002Fspan\u003E();\n\u003Cspan style=\"color:#a6e22e\"\u003EmyMock\u003C\u002Fspan\u003E.\u003Cspan style=\"color:#a6e22e\"\u003EmockImplementation\u003C\u002Fspan\u003E(() =&gt; {\n  \u003Cspan style=\"color:#66d9ef\"\u003Ethrow\u003C\u002Fspan\u003E \u003Cspan style=\"color:#66d9ef\"\u003Enew\u003C\u002Fspan\u003E Error(\u003Cspan style=\"color:#e6db74\"\u003E&#39;My error message&#39;\u003C\u002Fspan\u003E);\n});\n\n\u003Cspan style=\"color:#66d9ef\"\u003Etry\u003C\u002Fspan\u003E {\n  \u003Cspan style=\"color:#a6e22e\"\u003EmyMock\u003C\u002Fspan\u003E();\n} \u003Cspan style=\"color:#66d9ef\"\u003Ecatch\u003C\u002Fspan\u003E (\u003Cspan style=\"color:#a6e22e\"\u003Ee\u003C\u002Fspan\u003E) {\n  \u003Cspan style=\"color:#a6e22e\"\u003Econsole\u003C\u002Fspan\u003E.\u003Cspan style=\"color:#a6e22e\"\u003Elog\u003C\u002Fspan\u003E(\u003Cspan style=\"color:#a6e22e\"\u003Ee\u003C\u002Fspan\u003E.\u003Cspan style=\"color:#a6e22e\"\u003Emessage\u003C\u002Fspan\u003E); \u003Cspan style=\"color:#75715e\"\u003E\u002F\u002F &#34;My error message&#34;\n\u003C\u002Fspan\u003E\u003Cspan style=\"color:#75715e\"\u003E\u003C\u002Fspan\u003E}\n\u003C\u002Fpre\u003E\u003C\u002Ftd\u003E\u003C\u002Ftr\u003E\u003C\u002Ftbody\u003E\u003C\u002Ftable\u003E\n\u003C\u002Fdiv\u003E\n\u003Cp\u003E\u003Cbr\u002F\u003E\u003C\u002Fp\u003E\u003Cp\u003EYou can also use \u003Ccode\u003Ejest.fn().mockImplementationOnce()\u003C\u002Fcode\u003E to only throw the exception on the first call, and then have the mock function return normally on subsequent calls.\u003C\u002Fp\u003E",is_moderated:b,likes:_,dislikes:a,thread_title:i,thread_slug:Z,username:"carey",user_avatar:"avatar\u002Fcarey\u002F2520.jpg",user_active:f,role:g,role_logo:d,created:"2023-01-17T23:03:04Z"},{id:204256,message:"\u003Cp\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"ql-mention-denotation-char\"\u003E@\u003C\u002Fspan\u003Ecassandra\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E \u003C\u002Fspan\u003E \u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fp\u003E\u003Cp\u003EHere&#39;s an example of using jest.fn().mockImplementation() and jest.fn().mockImplementationOnce() to mock an exception in Jest:\u003C\u002Fp\u003E\u003Cpre class=\"code-block ql-syntax\" id=\"code-o6jxbgk\"\u003E\u002F\u002F Mock function to throw an exception\nconst myMock = jest.fn().mockImplementation(() =&gt; {\n  throw new Error(&#39;My error message&#39;);\n});\n\n\u002F\u002F Call the mock function and catch the exception\ntry {\n  myMock();\n} catch (e) {\n  console.log(e.message); \u002F\u002F &#34;My error message&#34;\n}\n\n\u002F\u002F Mock function to throw an exception only on the first call\nconst myMockOnce = jest\n  .fn()\n  .mockImplementationOnce(() =&gt; {\n    throw new Error(&#39;My error message&#39;);\n  })\n  .mockReturnValue(&#39;Normal return value on subsequent calls&#39;);\n\n\u002F\u002F Call the mock function multiple times\ntry {\n  myMockOnce(); \u002F\u002F Throws an exception\n} catch (e) {\n  console.log(e.message); \u002F\u002F &#34;My error message&#34;\n}\n\nconsole.log(myMockOnce()); \u002F\u002F &#34;Normal return value on subsequent calls&#34;\nconsole.log(myMockOnce()); \u002F\u002F &#34;Normal return value on subsequent calls&#34;\n\u003C\u002Fpre\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EIn this example, the \u003Ccode\u003EmyMock\u003C\u002Fcode\u003E mock function is created using jest.fn().mockImplementation() with a function that throws an error. When the mock function is called, it will throw the specified error.\u003C\u002Fp\u003E\u003Cp\u003E\u003Cbr\u003E\u003C\u002Fp\u003E\u003Cp\u003EThe \u003Ccode\u003EmyMockOnce\u003C\u002Fcode\u003E mock function is created using jest.fn().mockImplementationOnce(). The first time the mock function is called, it will throw an error. On subsequent calls, it will return the normal value specified by mockReturnValue().\u003C\u002Fp\u003E",formatted_message:"\u003Cp\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"mention\"\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan class=\"ql-mention-denotation-char\"\u003E@\u003C\u002Fspan\u003Ecassandra\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fspan\u003E \u003C\u002Fspan\u003E \u003C\u002Fspan\u003E\u003C\u002Fspan\u003E\u003C\u002Fp\u003E\u003Cp\u003EHere&#39;s an example of using jest.fn().mockImplementation() and jest.fn().mockImplementationOnce() to mock an exception in Jest:\u003C\u002Fp\u003E\u003Cdiv style=\"color:#f8f8f2;background-color:#272822;\"\u003E\n\u003Ctable style=\"border-spacing:0;padding:0;margin:0;border:0;\"\u003E\u003Ctbody\u003E\u003Ctr\u003E\u003Ctd style=\"vertical-align:top;padding:0;margin:0;border:0;\"\u003E\n\u003Cpre tabindex=\"0\" style=\"color:#f8f8f2;background-color:#272822;\"\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E 1\n\u003C\u002Fspan\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E 2\n\u003C\u002Fspan\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E 3\n\u003C\u002Fspan\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E 4\n\u003C\u002Fspan\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E 5\n\u003C\u002Fspan\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E 6\n\u003C\u002Fspan\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E 7\n\u003C\u002Fspan\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E 8\n\u003C\u002Fspan\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E 9\n\u003C\u002Fspan\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E10\n\u003C\u002Fspan\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E11\n\u003C\u002Fspan\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E12\n\u003C\u002Fspan\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E13\n\u003C\u002Fspan\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E14\n\u003C\u002Fspan\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E15\n\u003C\u002Fspan\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E16\n\u003C\u002Fspan\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E17\n\u003C\u002Fspan\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E18\n\u003C\u002Fspan\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E19\n\u003C\u002Fspan\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E20\n\u003C\u002Fspan\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E21\n\u003C\u002Fspan\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E22\n\u003C\u002Fspan\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E23\n\u003C\u002Fspan\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E24\n\u003C\u002Fspan\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E25\n\u003C\u002Fspan\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E26\n\u003C\u002Fspan\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E27\n\u003C\u002Fspan\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E28\n\u003C\u002Fspan\u003E\u003Cspan style=\"white-space:pre;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f\"\u003E29\n\u003C\u002Fspan\u003E\u003C\u002Fpre\u003E\u003C\u002Ftd\u003E\n\u003Ctd style=\"vertical-align:top;padding:0;margin:0;border:0;;width:100%\"\u003E\n\u003Cpre tabindex=\"0\" style=\"color:#f8f8f2;background-color:#272822;\"\u003E\u002F\u002F Mock function to throw an exception\nconst myMock = jest.fn().mockImplementation(() =&gt; {\n  throw new Error(&#39;My error message&#39;);\n});\n\n\u002F\u002F Call the mock function and catch the exception\ntry {\n  myMock();\n} catch (e) {\n  console.log(e.message); \u002F\u002F &#34;My error message&#34;\n}\n\n\u002F\u002F Mock function to throw an exception only on the first call\nconst myMockOnce = jest\n  .fn()\n  .mockImplementationOnce(() =&gt; {\n    throw new Error(&#39;My error message&#39;);\n  })\n  .mockReturnValue(&#39;Normal return value on subsequent calls&#39;);\n\n\u002F\u002F Call the mock function multiple times\ntry {\n  myMockOnce(); \u002F\u002F Throws an exception\n} catch (e) {\n  console.log(e.message); \u002F\u002F &#34;My error message&#34;\n}\n\nconsole.log(myMockOnce()); \u002F\u002F &#34;Normal return value on subsequent calls&#34;\nconsole.log(myMockOnce()); \u002F\u002F &#34;Normal return value on subsequent calls&#34;\n\u003C\u002Fpre\u003E\u003C\u002Ftd\u003E\u003C\u002Ftr\u003E\u003C\u002Ftbody\u003E\u003C\u002Ftable\u003E\n\u003C\u002Fdiv\u003E\n\u003Cp\u003E\u003Cbr\u002F\u003E\u003C\u002Fp\u003E\u003Cp\u003EIn this example, the \u003Ccode\u003EmyMock\u003C\u002Fcode\u003E mock function is created using jest.fn().mockImplementation() with a function that throws an error. When the mock function is called, it will throw the specified error.\u003C\u002Fp\u003E\u003Cp\u003E\u003Cbr\u002F\u003E\u003C\u002Fp\u003E\u003Cp\u003EThe \u003Ccode\u003EmyMockOnce\u003C\u002Fcode\u003E mock function is created using jest.fn().mockImplementationOnce(). The first time the mock function is called, it will throw an error. On subsequent calls, it will return the normal value specified by mockReturnValue().\u003C\u002Fp\u003E",is_moderated:b,likes:a,dislikes:a,thread_title:i,thread_slug:Z,username:au,user_avatar:"avatar\u002Ftrenton_kirlin\u002F2200.jpg",user_active:f,role:g,role_logo:d,created:"2023-12-23T00:33:28Z"}]}],fetch:{},error:e,state:{loading:a,settings:{id:8542,name:k,domain:"devhubby.com",port:80,plan:f,plan_name:"free",footer_code:"\u003C!-- Global site tag (gtag.js) - Google Analytics --\u003E\n\u003Cscript async src=\"https:\u002F\u002Fwww.googletagmanager.com\u002Fgtag\u002Fjs?id=G-5LBS05BL1D\"\u003E\u003C\u002Fscript\u003E\n\u003Cscript\u003E\n  window.dataLayer = window.dataLayer || [];\n  function gtag(){dataLayer.push(arguments);}\n  gtag('js', new Date());\n\n  gtag('config', 'G-5LBS05BL1D');\n\u003C\u002Fscript\u003E\n\n\u003Cscript async src=\"https:\u002F\u002Fpagead2.googlesyndication.com\u002Fpagead\u002Fjs\u002Fadsbygoogle.js?client=ca-pub-4833888168110763\"\n     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