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