eslint-plugin-unicorn-x/rules/fix/fix-space-around-keywords.js

More than 100 powerful ESLint rules

import {getParenthesizedRange} from '../utils/parentheses.js';

const isProblematicToken = ({type, value}) =>
	(type === 'Keyword' && /^[a-z]*$/.test(value)) ||
	// ForOfStatement
	(type === 'Identifier' && value === 'of') ||
	// AwaitExpression
	(type === 'Identifier' && value === 'await');

export default function* fixSpaceAroundKeyword(fixer, node, sourceCode) {
	const range = getParenthesizedRange(node, sourceCode);
	const tokenBefore = sourceCode.getTokenBefore(
		{range},
		{includeComments: true},
	);

	if (
		tokenBefore &&
		range[0] === sourceCode.getRange(tokenBefore)[1] &&
		isProblematicToken(tokenBefore)
	) {
		yield fixer.insertTextAfter(tokenBefore, ' ');
	}

	const tokenAfter = sourceCode.getTokenAfter({range}, {includeComments: true});

	if (
		tokenAfter &&
		range[1] === sourceCode.getRange(tokenAfter)[0] &&
		isProblematicToken(tokenAfter)
	) {
		yield fixer.insertTextBefore(tokenAfter, ' ');
	}
}