Update dependency prettier to v2

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
prettier (source)	devDependencies	major	~1.19.1 -> ~2.1.0

---

Release Notes

prettier/prettier

v2.1.2

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Fix formatting for directives in fields (#​9116 by @​sosukesuzuki)

v2.1.1

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Fix format on html with frontMatter (#​9043 by @​fisker)

<!-- Input -->
---
layout: foo
---

Test <a
href="https://prettier.io">abc</a>.

<!-- Prettier stable -->
TypeError: Cannot read property 'end' of undefined
  ...

<!-- Prettier master -->
---
layout: foo
---

Test <a href="https://prettier.io">abc</a>.

Fix broken format for ...infer T (#​9044 by @​fisker)

// Input
type Tail<T extends any[]> = T extends [infer U, ...infer R] ? R : never;

// Prettier stable
type Tail<T extends any[]> = T extends [infer U, ...(infer R)] ? R : never;

// Prettier master
type Tail<T extends any[]> = T extends [infer U, ...infer R] ? R : never;

Fix format on style[lang="sass"] (#​9051 by @​fisker)

<!-- Input -->
<style lang="sass">
.hero
  @&#8203;include background-centered
</style>

<!-- Prettier stable -->
<style lang="sass">
.hero @&#8203;include background-centered;
</style>

<!-- Prettier master -->
<style lang="sass">
  .hero
    @&#8203;include background-centered
</style>

Fix self-closing blocks and blocks with src attribute format (#​9052, #​9055 by @​fisker)

<!-- Input -->
<custom lang="markdown" src="./foo.md"></custom>
<custom lang="markdown" src="./foo.md" />
<custom lang="markdown" />

<!-- Prettier stable -->
<custom lang="markdown" src="./foo.md">

</custom>
<custom lang="markdown" src="./foo.md"

/>
<custom lang="markdown"

/>

<!-- Prettier master -->
<custom lang="markdown" src="./foo.md"></custom>
<custom lang="markdown" src="./foo.md" />
<custom lang="markdown" />

v2.1.0

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🔗 Release Notes

v2.0.5

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Less: Fix formatting of :extend (#​7984 by @​fisker)

// Input
.class {
  &:extend(.some-class .some-other-class .some-very-loooooooooooooong-class all);
}

// Prettier 2.0.4
.class {
  &:extend(
    .some-class .some-other-class .some-very-loooooooooooooong-class all
  );
}

// Prettier 2.0.4 (Second format)
.class {
  &: extend(
    .some-class .some-other-class .some-very-loooooooooooooong-class all
  );
}

// Prettier 2.0.5
.class {
  &:extend(
    .some-class .some-other-class .some-very-loooooooooooooong-class all
  );
}

Editor integration: Use resolve if builtin require.resolve is overridden (#​8072 by @​fisker)

This fixes issues that the users of Atom and WebStorm faced with 2.0.4.

Prettier now switches to using the resolve module for resolving configuration files and plugins if it detects that require.resolve isn't Node's builtin function (doesn't support the second argument), which happens in environments like editor extensions. To force the fallback, set the PRETTIER_FALLBACK_RESOLVE environment variable to true.

v2.0.4

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Revert #​7869, "[TypeScript] format TSAsExpression with same logic as BinaryExpression" (#​7958)

v2.0.3

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diff

JavaScript

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

// 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)

// 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)

// 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)

// 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)

// 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)

// 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)

// 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)

<!-- 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)

<!-- 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

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2.0 regressions

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

// 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.

// 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

Other changes

TypeScript: Fix prettier-ignore in union types (#​7798 by @​thorn0)

// Input
export type a =
  // foo
  | foo1&foo2
  // prettier-ignore
  | bar1&bar2
  // baz
  | baz1&baz2;

// Prettier 2.0.0
export type a =
  // foo
  | foo1&foo2
    // prettier-ignore
  // prettier-ignore
  | (bar1 & bar2)
  // baz
  | (baz1 & baz2);

// Prettier 2.0.2
export type a =
  // foo
  | (foo1 & foo2)
  // prettier-ignore
  | bar1&bar2
  // baz
  | (baz1 & baz2);

v2.0.1

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

v2.0.0

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[RyanZim]

Drops Node 8