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no-empty-file: Fix false positive with triple-slash directives #1605

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merged 6 commits into from Nov 15, 2021
Merged

no-empty-file: Fix false positive with triple-slash directives #1605

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a08a6cb
Fixes `no-empty-file` false positive with triple-slash directives.
manovotny Nov 11, 2021
64f1812
Looks for triple-slash directive instead of filename.
manovotny Nov 12, 2021
66a1616
Changes comments from node lookup to `sourceCode.getAllComments()`.
manovotny Nov 12, 2021
f28d616
Merge branch 'main' into fix-no-empty-file-false-positive-triple-slas…
manovotny Nov 12, 2021
c4cfca7
Simplifies directive check by removing double negative.
manovotny Nov 12, 2021
d9f76cd
Splits triple-slash directive check into it's own check for better pe…
manovotny Nov 12, 2021
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13 changes: 13 additions & 0 deletions rules/no-empty-file.js
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Expand Up @@ -13,6 +13,12 @@ const isEmpty = node =>
|| node.type === 'EmptyStatement'
|| (node.type === 'ExpressionStatement' && 'directive' in node);

const isTripleSlashDirective = node =>
node.type === 'Line' && node.value.startsWith('/');

const hasTripeSlashDirectives = comments =>
comments.some(currentNode => isTripleSlashDirective(currentNode));

/** @param {import('eslint').Rule.RuleContext} context */
const create = context => {
const filename = context.getPhysicalFilename().toLowerCase();
Expand All @@ -27,6 +33,13 @@ const create = context => {
return;
}

const sourceCode = context.getSourceCode();
const comments = sourceCode.getAllComments();

if (hasTripeSlashDirectives(comments)) {
return;
}

return {
node,
messageId: MESSAGE_ID,
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4 changes: 4 additions & 0 deletions test/no-empty-file.mjs
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Expand Up @@ -37,6 +37,10 @@ test.snapshot({
'svelte',
'tsx',
].map(extension => ({code: '', filename: `example.${extension}`})),
...[
'd.ts',
'ts',
].map(extension => ({code: '/// <reference types="example" />', filename: `example.${extension}`})),
],
invalid: [
...[
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