57 lines
1.4 KiB
JavaScript
57 lines
1.4 KiB
JavaScript
'use strict';
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const {methodCallSelector} = require('./selectors/index.js');
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const messages = {
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'error/charCodeAt': 'Prefer `String#codePointAt()` over `String#charCodeAt()`.',
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'error/fromCharCode': 'Prefer `String.fromCodePoint()` over `String.fromCharCode()`.',
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'suggestion/charCodeAt': 'Use `String#codePointAt()`.',
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'suggestion/fromCharCode': 'Use `String.fromCodePoint()`.',
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};
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const cases = [
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{
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selector: methodCallSelector('charCodeAt'),
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replacement: 'codePointAt',
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},
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{
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selector: methodCallSelector({object: 'String', method: 'fromCharCode'}),
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replacement: 'fromCodePoint',
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},
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];
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/** @param {import('eslint').Rule.RuleContext} context */
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const create = () => Object.fromEntries(
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cases.map(({selector, replacement}) => [
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selector,
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node => {
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const method = node.callee.property;
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const methodName = method.name;
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const fix = fixer => fixer.replaceText(method, replacement);
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return {
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node: method,
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messageId: `error/${methodName}`,
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suggest: [
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{
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messageId: `suggestion/${methodName}`,
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fix,
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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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/** @type {import('eslint').Rule.RuleModule} */
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module.exports = {
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create,
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meta: {
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type: 'suggestion',
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docs: {
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description: 'Prefer `String#codePointAt(…)` over `String#charCodeAt(…)` and `String.fromCodePoint(…)` over `String.fromCharCode(…)`.',
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},
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hasSuggestions: true,
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messages,
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},
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};
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