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codeql-action/node_modules/eslint/lib/rules/implicit-arrow-linebreak.js
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/** | |
* @fileoverview enforce the location of arrow function bodies | |
* @author Sharmila Jesupaul | |
*/ | |
"use strict"; | |
const { isCommentToken, isNotOpeningParenToken } = require("./utils/ast-utils"); | |
//------------------------------------------------------------------------------ | |
// Rule Definition | |
//------------------------------------------------------------------------------ | |
/** @type {import('../shared/types').Rule} */ | |
module.exports = { | |
meta: { | |
type: "layout", | |
docs: { | |
description: "Enforce the location of arrow function bodies", | |
recommended: false, | |
url: "https://eslint.org/docs/latest/rules/implicit-arrow-linebreak" | |
}, | |
fixable: "whitespace", | |
schema: [ | |
{ | |
enum: ["beside", "below"] | |
} | |
], | |
messages: { | |
expected: "Expected a linebreak before this expression.", | |
unexpected: "Expected no linebreak before this expression." | |
} | |
}, | |
create(context) { | |
const sourceCode = context.sourceCode; | |
const option = context.options[0] || "beside"; | |
/** | |
* Validates the location of an arrow function body | |
* @param {ASTNode} node The arrow function body | |
* @returns {void} | |
*/ | |
function validateExpression(node) { | |
if (node.body.type === "BlockStatement") { | |
return; | |
} | |
const arrowToken = sourceCode.getTokenBefore(node.body, isNotOpeningParenToken); | |
const firstTokenOfBody = sourceCode.getTokenAfter(arrowToken); | |
if (arrowToken.loc.end.line === firstTokenOfBody.loc.start.line && option === "below") { | |
context.report({ | |
node: firstTokenOfBody, | |
messageId: "expected", | |
fix: fixer => fixer.insertTextBefore(firstTokenOfBody, "\n") | |
}); | |
} else if (arrowToken.loc.end.line !== firstTokenOfBody.loc.start.line && option === "beside") { | |
context.report({ | |
node: firstTokenOfBody, | |
messageId: "unexpected", | |
fix(fixer) { | |
if (sourceCode.getFirstTokenBetween(arrowToken, firstTokenOfBody, { includeComments: true, filter: isCommentToken })) { | |
return null; | |
} | |
return fixer.replaceTextRange([arrowToken.range[1], firstTokenOfBody.range[0]], " "); | |
} | |
}); | |
} | |
} | |
//---------------------------------------------------------------------- | |
// Public | |
//---------------------------------------------------------------------- | |
return { | |
ArrowFunctionExpression: node => validateExpression(node) | |
}; | |
} | |
}; |