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negate async function result will break in safari 11 #4138

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#4315
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negate async function result will break in safari 11#4138
#4315
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help wantedWe're a small group who can't get to every issue promptly. We’d appreciate help fixing this issue!lang:javascriptIssues affecting JSlocked-due-to-inactivityPlease open a new issue and fill out the template instead of commenting.
@KnisterPeter

Description

@KnisterPeter
KnisterPeter
opened on Mar 12, 2018

Negating the return value of an async function call in an if statement breaks in safari.

Prettier 1.11.1
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Input:

async () => {
  if (!await test()) {
    // some
  }
  // else
};

Output:

async () => {
  if (!await test()) {
    // some
  }
  // else
};

Expected behavior:

Output:

async () => {
  if (!(await test())) {
    // some
  }
  // else
};

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    help wantedWe're a small group who can't get to every issue promptly. We’d appreciate help fixing this issue!lang:javascriptIssues affecting JSlocked-due-to-inactivityPlease open a new issue and fill out the template instead of commenting.

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