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[TypeScript] support readonly operator #5977

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Suggestion
#6027
Closed
[TypeScript] support readonly operator#5977
Suggestion
#6027
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lang:typescriptIssues affecting TypeScript-specific constructs (not general JS issues)locked-due-to-inactivityPlease open a new issue and fill out the template instead of commenting.scope:dependencyIssues that cannot be solved inside Prettier itself, and must be fixed in a dependencystatus:has prIssues with an accompanying pull request. These issues will probably be fixed soon!
Milestone
1.17
@ikatyang

Description

@ikatyang
ikatyang
opened on Mar 16, 2019

TS 3.4 RC release note

Prettier 1.16.4
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--parser typescript

Input:

declare const array: readonly number[];

Output:

SyntaxError: ',' expected. (1:31)
> 1 | declare const array: readonly number[];
    |                               ^

Expected behavior:
no error

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    lang:typescriptIssues affecting TypeScript-specific constructs (not general JS issues)locked-due-to-inactivityPlease open a new issue and fill out the template instead of commenting.scope:dependencyIssues that cannot be solved inside Prettier itself, and must be fixed in a dependencystatus:has prIssues with an accompanying pull request. These issues will probably be fixed soon!

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