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60 lines
1.7 KiB
60 lines
1.7 KiB
/** |
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* @fileoverview Rule to flag when using constructor for wrapper objects |
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* @author Ilya Volodin |
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*/ |
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"use strict"; |
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//------------------------------------------------------------------------------ |
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// Requirements |
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//------------------------------------------------------------------------------ |
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const { getVariableByName } = require("./utils/ast-utils"); |
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//------------------------------------------------------------------------------ |
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// Rule Definition |
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//------------------------------------------------------------------------------ |
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/** @type {import('../shared/types').Rule} */ |
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module.exports = { |
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meta: { |
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type: "suggestion", |
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docs: { |
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description: "Disallow `new` operators with the `String`, `Number`, and `Boolean` objects", |
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recommended: false, |
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url: "https://eslint.org/docs/latest/rules/no-new-wrappers" |
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}, |
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schema: [], |
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messages: { |
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noConstructor: "Do not use {{fn}} as a constructor." |
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} |
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}, |
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create(context) { |
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const { sourceCode } = context; |
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return { |
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NewExpression(node) { |
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const wrapperObjects = ["String", "Number", "Boolean"]; |
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const { name } = node.callee; |
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if (wrapperObjects.includes(name)) { |
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const variable = getVariableByName(sourceCode.getScope(node), name); |
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if (variable && variable.identifiers.length === 0) { |
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context.report({ |
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node, |
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messageId: "noConstructor", |
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data: { fn: name } |
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}); |
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} |
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} |
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} |
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}; |
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} |
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};
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