prettier changelog

Changelog History

Page 3

• v2.0.3 Changes

  April 05, 2020

  diff

  JavaScript

  🛠 Fix prettier-ignore inside JSX (#7877 by @fisker)

  <!-- prettier-ignore -->

  // Input
  <div>
  {
    /* prettier-ignore */
    x     ?   <Y/> : <Z/>
  }
  </div>;
  
  // Prettier 2.0.2 (first output)
  <div>
    {/* prettier-ignore */
    x     ?   <Y/> : <Z/>}
  </div>;
  
  // Prettier 2.0.2 (second output)
  <div>{/* prettier-ignore */ x     ?   <Y/> : <Z/>}</div>;
  
  // Prettier 2.0.3
  <div>
    {
      /* prettier-ignore */
      x     ?   <Y/> : <Z/>
    }
  </div>;
  

  🛠 Fix regressions in styled-components template literals (#7883 by @thorn0)

  <!-- prettier-ignore -->

  // Input
  const Icon = styled.div`
    background:   var(--${background});
    ${Link}:not(:first-child) {
        fill:    rebeccapurple;
    }
  `;
  
  // Prettier 2.0.2
  const Icon = styled.div`
    background: var(-- ${background});
    ${Link}:not (:first-child) {
      fill: rebeccapurple;
    }
  `;
  
  // Prettier 2.0.3
  const Icon = styled.div`
    background: var(--${background});
    ${Link}:not(:first-child) {
      fill: rebeccapurple;
    }
  `;
  

  🛠 Fix: line endings were not always converted properly in multiline strings and comments (#7891 by @sidharthv96)

  <!-- prettier-ignore -->

  // Input
  export const IAmIncredibleLongFunctionName = IAmAnotherFunctionName(<CRLF>
    (_0: IAmIncredibleLongParameterType) => {<CRLF>
      setTimeout(() => {<CRLF>
        /*<CRLF>
          Multiline comment<CRLF>
          Multiline comment<CRLF>
          Multiline comment<CRLF>
        */<CRLF>
        console.log(<CRLF>
          "Multiline string\<CRLF>
           Multiline string\<CRLF>
           Multiline string"<CRLF>
        );<CRLF>
      });<CRLF>
    }<CRLF>
  );<CRLF>
  
  // Prettier 2.0.2
  export const IAmIncredibleLongFunctionName = IAmAnotherFunctionName(<CRLF>
    (_0: IAmIncredibleLongParameterType) => {<CRLF>
      setTimeout(() => {<CRLF>
        /*<LF>
          Multiline comment<LF>
          Multiline comment<LF>
          Multiline comment<LF>
        */<CRLF>
        console.log(<CRLF>
          "Multiline string\<LF>
           Multiline string\<LF>
           Multiline string"<CRLF>
        );<CRLF>
      });<CRLF>
    }<CRLF>
  );<CRLF>
  
  // Prettier 2.0.3: same as input
  

  🛠 Fix bug with holes in array literals (#7911 by @bakkot)

  <!-- prettier-ignore -->

  // Input
  new Test()
    .test()
    .test([, 0])
    .test();
  
  // Prettier 2.0.2
  [error] in.js: TypeError: Cannot read property 'type' of null
  
  // Prettier 2.0.3
  new Test().test().test([, 0]).test();
  

  TypeScript

  Wrap TSAsExpression (#7869 by @sosukesuzuki)

  <!-- prettier-ignore -->

  // Input
  const value = thisIsAnIdentifier as ThisIsAReallyReallyReallyReallyReallyReallyReallyReallyReallyReallyReallyLongInterface;
  
  // Prettier 2.0.2
  const value = thisIsAnIdentifier as ThisIsAReallyReallyReallyReallyReallyReallyReallyReallyReallyReallyReallyLongInterface;
  
  // Prettier 2.0.3
  const value =
    thisIsAnIdentifier as
    ThisIsAReallyReallyReallyReallyReallyReallyReallyReallyReallyReallyReallyLongInterface;
  

  Flow

  🖨 Print dangling comments for inexact object type (#7892 by @sosukesuzuki)

  <!-- prettier-ignore -->

  // Input
  type Foo = {
    // comment
    ...,
  };
  
  // Prettier 2.0.2
  Error: Comment "comment" was not printed. Please report this error!
  
  // Prettier 2.0.3
  type Foo = {
    // comment
    ...,
  };
  

  Do not add comma for explicit inexact object with indexer property or no properties (#7923 by @DmitryGonchar)

  <!-- prettier-ignore -->

  // Input
  type T = {
    [string]: number,
    ...,
  }
  
  type T = {
    // comment
    ...,
  }
  
  // Prettier 2.0.2
  type T = {
    [string]: number,
    ...,
  }
  
  type T = {
    // comment
    ...,
  }
  
  // Prettier 2.0.3
  type T = {
    [string]: number,
    ...
  }
  
  type T = {
    // comment
    ...
  }
  

  HTML

  🛠 Fix printing of ignored empty inline elements (#7867 by @fisker)

  <!-- prettier-ignore -->

  <!-- Input-->
  <!--prettier-ignore--><span></span>
  <!--prettier-ignore--><span>_</span>
  
  <!-- Prettier 2.0.2 (first output) -->
  <!--prettier-ignore--><span
  ></span>
  <!--prettier-ignore--><span>_</span>
  
  <!-- Prettier 2.0.2 (second output) -->
  <!--prettier-ignore--><span
  
  ></span>
  <!--prettier-ignore--><span>_</span>
  
  <!-- Prettier 2.0.3 -->
  <!--prettier-ignore--><span></span>
  <!--prettier-ignore--><span>_</span>
  

  💅 Format script and style inside tags with a colon in the name (#7916 by @fisker)

  <!-- prettier-ignore -->

  <!-- Input -->
  <with:colon>
  <script>function foo(){      return 1}</script>
  <style>a         {color:         #f00}</style>
  </with:colon>
  
  <!-- Prettier 2.0.2 -->
  <with:colon>
    <script>
      function foo(){ return 1}
    </script>
    <style>
      a {color: #f00}
    </style>
  </with:colon>
  
  <!-- Prettier 2.0.3 -->
  <with:colon>
    <script>
      function foo() {
        return 1;
      }
    </script>
    <style>
      a {
        color: #f00;
      }
    </style>
  </with:colon>
  

  Other changes

  • ↪ Workaround for require.resolve in prettier-vscode (#7951 by @thorn0)
  • 🛠 Fix unstable Angular expression binding (#7924 by @fisker)
  • ⚡️ Update isSCSS regex (#7922 by @fisker)
  • 🛠 Fix formatting of empty files (#7921 by @fisker)

• v2.0.2 Changes

  March 23, 2020

  🍱 🔗 Changelog

• v2.0.1 Changes

  March 21, 2020

  diff

  🏗 API: Fix build script to not corrupt import-fresh module (#7820 by @thorn0)

• v2.0 Changes

  💅 JavaScript: Fix formatting of pseudo-elements and pseudo-classes in styled-components template literals (#7842 by @thorn0)

  <!-- prettier-ignore -->

  // Input
  const Foo = styled.div`
    ${media.smallDown}::before {}
  `;
  
  // Prettier 2.0.0
  const Foo = styled.div`
    ${media.smallDown}: : before{
    }
  `;
  
  // Prettier 2.0.2
  const Foo = styled.div`
    ${media.smallDown}::before {
    }
  `;
  

  TypeScript: Avoid trailing commas on index signatures with only one parameter (#7836 by @bakkot)

  📜 TypeScript index signatures technically allow multiple parameters and trailing commas, but it's an error to have multiple parameters there, and Babel's TypeScript parser does not accept them. So Prettier now avoids putting a trailing comma there when you have only one parameter.

  <!-- prettier-ignore -->

  // Input
  export type A = {
    a?: {
      [
        x: string
      ]: typeof SomeLongLongLongTypeName[keyof typeof SomeLongLongLongTypeName];
    } | null;
  };
  
  // Prettier 2.0.0
  export type A = {
    a?: {
      [
        x: string,
      ]: typeof SomeLongLongLongTypeName[keyof typeof SomeLongLongLongTypeName];
    } | null;
  };
  
  // Prettier 2.0.2
  export type A = {
    a?: {
      [
        x: string
      ]: typeof SomeLongLongLongTypeName[keyof typeof SomeLongLongLongTypeName];
    } | null;
  };
  

  ⏪ Revert "markdown: fix redundant leading spaces in markdown list" (#7847)

  👀 See #7846

• v1.19.1 Changes

  November 09, 2019

  diff

  CLI

  🛠 Fix --stdin regression in 1.19.0 (#6894 by @lydell)

  <!-- prettier-ignore -->

  // Prettier stable
  $ echo "test" | prettier --stdin --parser babel
  [error] regeneratorRuntime is not defined
  
  // Prettier master
  $ echo "test" | prettier --stdin --parser babel
  test;
  

  TypeScript

  🛠 Fix formatting of union type as arrow function return type (#6896 by @thorn0)

  <!-- prettier-ignore -->

  // Input
  export const getVehicleDescriptor = async (
    vehicleId: string,
  ): Promise<Collections.Parts.PrintedCircuitBoardAssembly['attributes'] | undefined> => {}
  
  // Prettier stable
  export const getVehicleDescriptor = async (
    vehicleId: string
  ): Promise<| Collections.Parts.PrintedCircuitBoardAssembly["attributes"]
  | undefined> => {};
  
  // Prettier master
  export const getVehicleDescriptor = async (
    vehicleId: string
  ): Promise<
    Collections.Parts.PrintedCircuitBoardAssembly["attributes"] | undefined
  > => {};
  

• v1.19.0 Changes

  November 09, 2019

  🚀 🔗 Release Notes

• v1.18.2 Changes

  June 07, 2019

  diff

  • TypeScript: only add trailing commas in tuples for --trailing-comma=all (#6199 by @duailibe)

  In Prettier 1.18 we added trailing commas in tuples when --trailing-comma=all, but it was also adding for --trailing-comma=es5.

• v1.18.1 Changes

  June 07, 2019

  diff

  • TypeScript: Add trailing comma in tsx, only for arrow function (#6190 by @sosukesuzuki)

  Prettier inserts a trailing comma to single type parameter for arrow functions in tsx, since v 1.18. But, this feature inserts a trailing comma to type parameter for besides arrow functions too (e.g, function , interface). This change fix it.

  <!-- prettier-ignore -->

    // Input
    interface Interface1<T> {
      one: "one";
    }
    function function1<T>() {
      return "one";
    }
  
    // Output (Prettier 1.18.0)
    interface Interface1<T,> {
      one: "one";
    }
    function function1<T,>() {
      return "one";
    }
  
    // Output (Prettier 1.18.1)
    interface Interface1<T> {
      one: "one";
    }
    function function1<T>() {
      return "one";
    }
  

  • Config: Match dotfiles in config overrides (#6194 by @duailibe)

  When using overrides in the config file, Prettier was not matching dotfiles (files that start with .). This was fixed in 1.18.1

• v1.18.0 Changes

  June 06, 2019

  🚀 🔗 Release Notes

• v1.17.1 Changes

  May 13, 2019

  diff

  • Range: Fix ranged formatting not using the correct line width (#6050 by @mathieulj)

  <!-- prettier-ignore -->

    // Input
    function f() {
      if (true) {
        call("this line is 79 chars", "long", "it should", "stay as single line");
      }
    }
  
    // Output (Prettier 1.17.0 run with --range-start 30 --range-end 110)
    function f() {
      if (true) {
        call(
          "this line is 79 chars",
          "long",
          "it should",
          "stay as single line"
        );
      }
    }
  
    // Output (Prettier 1.17.0 run without range)
    function f() {
      if (true) {
        call("this line is 79 chars", "long", "it should", "stay as single line");
      }
    }
  
    // Output (Prettier 1.17.1 with and without range)
    function f() {
      if (true) {
        call("this line is 79 chars", "long", "it should", "stay as single line");
      }
    }
  

  • JavaScript: Fix closure compiler typecasts ([#5947] by @jridgewell)

  If a closing parenthesis follows after a typecast in an inner expression, the typecast would wrap everything to the that following parenthesis.

  <!-- prettier-ignore -->

    // Input
    test(/** @type {!Array} */(arrOrString).length);
    test(/** @type {!Array} */((arrOrString)).length + 1);
  
    // Output (Prettier 1.17.0)
    test(/** @type {!Array} */ (arrOrString.length));
    test(/** @type {!Array} */ (arrOrString.length + 1));
  
    // Output (Prettier 1.17.1)
    test(/** @type {!Array} */ (arrOrString).length);
    test(/** @type {!Array} */ (arrOrString).length + 1);
  

  • JavaScript: respect parenthesis around optional chaining before await (#6087 by @evilebottnawi)

  <!-- prettier-ignore -->

    // Input
    async function myFunction() {
      var x = (await foo.bar.blah)?.hi;
    }
  
    // Output (Prettier 1.17.0)
    async function myFunction() {
      var x = await foo.bar.blah?.hi;
    }
  
    // Output (Prettier 1.17.1)
    async function myFunction() {
      var x = (await foo.bar.blah)?.hi;
    }
  

  • 🔀 Handlebars: Fix {{else}}{{#if}} into {{else if}} merging (#6080 by @dcyriller)

  <!-- prettier-ignore -->

    // Input
    {{#if a}}
      a
    {{else}}
      {{#if c}}
        c
      {{/if}}
      e
    {{/if}}
  
    // Output (Prettier 1.17.0)
    {{#if a}}
      a
    {{else if c}}
      c
    e
    {{/if}}
  
    // Output (Prettier 1.17.1)
    Code Sample
    {{#if a}}
      a
    {{else}}
      {{#if c}}
        c
      {{/if}}
      e
    {{/if}}
  

  • JavaScript: Improved multiline closure compiler typecast comment detection (#6070 by @yangsu)

  Previously, multiline closure compiler typecast comments with lines that start with * weren't flagged correctly and the subsequent parenthesis were stripped. Prettier 1.17.1 fixes this issue.

  <!-- prettier-ignore -->

    // Input
    const style =/**
     * @type {{
     *   width: number,
     * }}
    */({
      width,
    });
  
    // Output (Prettier 1.17.0)
    const style =/**
     * @type {{
     *   width: number,
     * }}
    */ {
      width,
    };
  
    // Output (Prettier 1.17.1)
    const style =/**
     * @type {{
     *   width: number,
     * }}
    */({
      width,
    });
  

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