eslint-plugin-unicorn/rules/utils/replace-node-or-token-and-spaces-before.js

Various awesome ESLint rules

'use strict';
const {isOpeningParenToken, isClosingParenToken} = require('eslint-utils');
const getParenthesizedTimes = require('./get-parenthesized-times');

function * replaceNodeOrTokenAndSpacesBefore(nodeOrToken, replacement, fixer, sourceCode) {
	const parenthesizedTimes = getParenthesizedTimes(nodeOrToken, sourceCode);

	if (parenthesizedTimes > 0) {
		let lastBefore = nodeOrToken;
		let lastAfter = nodeOrToken;
		for (let index = 0; index < parenthesizedTimes; index++) {
			const openingParenthesisToken = sourceCode.getTokenBefore(lastBefore, isOpeningParenToken);
			const closingParenthesisToken = sourceCode.getTokenAfter(lastAfter, isClosingParenToken);
			yield * replaceNodeOrTokenAndSpacesBefore(openingParenthesisToken, '', fixer, sourceCode);
			yield * replaceNodeOrTokenAndSpacesBefore(closingParenthesisToken, '', fixer, sourceCode);
			lastBefore = openingParenthesisToken;
			lastAfter = closingParenthesisToken;
		}
	}

	let [start, end] = nodeOrToken.range;

	const textBefore = sourceCode.text.slice(0, start);
	const [trailingSpaces] = textBefore.match(/\s*$/);
	const [lineBreak] = trailingSpaces.match(/(?:\r?\n|\r){0,1}/);
	start -= trailingSpaces.length;

	yield fixer.replaceTextRange([start, end], `${lineBreak}${replacement}`);
}

module.exports = replaceNodeOrTokenAndSpacesBefore;