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simplify isLookaheadRelational method #11922

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merged 2 commits into from Aug 6, 2020

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JLHwung
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@JLHwung JLHwung commented Aug 5, 2020

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License MIT

Simplify isLookaheadRelational to get rid of an uncovered line: https://codecov.io/gh/babel/babel/src/bc7a811fce3ceeea393229299c1cdb63858608e6/packages/babel-parser/src/parser/util.js#L42

@JLHwung JLHwung added PR: Internal 🏠 A type of pull request used for our changelog categories pkg: parser labels Aug 5, 2020
isLookaheadRelational(op: "<" | ">"): boolean {
const next = this.nextTokenStart();
if (this.input.charAt(next) === op) {
if (next + 1 === this.input.length) {
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This check is removed in isLookaheadToken_lt because if next + 1 is the length, afterNext is NaN, thus it always satisfies

afterNext !== charCodes.lessThan && afterNext !== charCodes.equalsTo

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Build successful! You can test your changes in the REPL here: https://babeljs.io/repl/build/26947/

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@JLHwung JLHwung merged commit 76f033f into babel:main Aug 6, 2020
@JLHwung JLHwung deleted the refactor-islookahead-relational branch August 6, 2020 00:21
@github-actions github-actions bot added the outdated A closed issue/PR that is archived due to age. Recommended to make a new issue label Nov 5, 2020
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4 participants