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codeql-action/node_modules/eslint/lib/rules/rest-spread-spacing.js
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/** | |
* @fileoverview Enforce spacing between rest and spread operators and their expressions. | |
* @author Kai Cataldo | |
*/ | |
"use strict"; | |
//------------------------------------------------------------------------------ | |
// Rule Definition | |
//------------------------------------------------------------------------------ | |
/** @type {import('../shared/types').Rule} */ | |
module.exports = { | |
meta: { | |
type: "layout", | |
docs: { | |
description: "Enforce spacing between rest and spread operators and their expressions", | |
recommended: false, | |
url: "https://eslint.org/docs/latest/rules/rest-spread-spacing" | |
}, | |
fixable: "whitespace", | |
schema: [ | |
{ | |
enum: ["always", "never"] | |
} | |
], | |
messages: { | |
unexpectedWhitespace: "Unexpected whitespace after {{type}} operator.", | |
expectedWhitespace: "Expected whitespace after {{type}} operator." | |
} | |
}, | |
create(context) { | |
const sourceCode = context.sourceCode, | |
alwaysSpace = context.options[0] === "always"; | |
//-------------------------------------------------------------------------- | |
// Helpers | |
//-------------------------------------------------------------------------- | |
/** | |
* Checks whitespace between rest/spread operators and their expressions | |
* @param {ASTNode} node The node to check | |
* @returns {void} | |
*/ | |
function checkWhiteSpace(node) { | |
const operator = sourceCode.getFirstToken(node), | |
nextToken = sourceCode.getTokenAfter(operator), | |
hasWhitespace = sourceCode.isSpaceBetweenTokens(operator, nextToken); | |
let type; | |
switch (node.type) { | |
case "SpreadElement": | |
type = "spread"; | |
if (node.parent.type === "ObjectExpression") { | |
type += " property"; | |
} | |
break; | |
case "RestElement": | |
type = "rest"; | |
if (node.parent.type === "ObjectPattern") { | |
type += " property"; | |
} | |
break; | |
case "ExperimentalSpreadProperty": | |
type = "spread property"; | |
break; | |
case "ExperimentalRestProperty": | |
type = "rest property"; | |
break; | |
default: | |
return; | |
} | |
if (alwaysSpace && !hasWhitespace) { | |
context.report({ | |
node, | |
loc: operator.loc, | |
messageId: "expectedWhitespace", | |
data: { | |
type | |
}, | |
fix(fixer) { | |
return fixer.replaceTextRange([operator.range[1], nextToken.range[0]], " "); | |
} | |
}); | |
} else if (!alwaysSpace && hasWhitespace) { | |
context.report({ | |
node, | |
loc: { | |
start: operator.loc.end, | |
end: nextToken.loc.start | |
}, | |
messageId: "unexpectedWhitespace", | |
data: { | |
type | |
}, | |
fix(fixer) { | |
return fixer.removeRange([operator.range[1], nextToken.range[0]]); | |
} | |
}); | |
} | |
} | |
//-------------------------------------------------------------------------- | |
// Public | |
//-------------------------------------------------------------------------- | |
return { | |
SpreadElement: checkWhiteSpace, | |
RestElement: checkWhiteSpace, | |
ExperimentalSpreadProperty: checkWhiteSpace, | |
ExperimentalRestProperty: checkWhiteSpace | |
}; | |
} | |
}; |