routie dev init since i didn't adhere to any proper guidance up until now
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import {
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shouldAddParenthesesToMemberExpressionObject,
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isParenthesized,
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} from './utils/index.js';
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import {fixSpaceAroundKeyword} from './fix/index.js';
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const MESSAGE_ID = 'no-unreadable-array-destructuring';
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const messages = {
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[MESSAGE_ID]: 'Array destructuring may not contain consecutive ignored values.',
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};
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const isCommaFollowedWithComma = (element, index, array) =>
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element === null && array[index + 1] === null;
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/** @param {import('eslint').Rule.RuleContext} context */
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const create = context => {
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const {sourceCode} = context;
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context.on('ArrayPattern', node => {
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const {elements, parent} = node;
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if (
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elements.length < 3
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|| !elements.some((element, index, elements) => isCommaFollowedWithComma(element, index, elements))) {
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return;
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}
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const problem = {
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node,
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messageId: MESSAGE_ID,
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};
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const nonNullElements = elements.filter(node => node !== null);
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if (
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parent.type === 'VariableDeclarator'
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&& parent.id === node
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&& parent.init !== null
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&& nonNullElements.length === 1
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) {
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const [element] = nonNullElements;
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if (element.type !== 'AssignmentPattern') {
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problem.fix = function * (fixer) {
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const index = elements.indexOf(element);
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const isSlice = element.type === 'RestElement';
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const variable = isSlice ? element.argument : element;
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yield fixer.replaceText(node, sourceCode.getText(variable));
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const code = isSlice ? `.slice(${index})` : `[${index}]`;
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const array = parent.init;
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if (
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!isParenthesized(array, context)
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&& shouldAddParenthesesToMemberExpressionObject(array, context)
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) {
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yield fixer.insertTextBefore(array, '(');
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yield fixer.insertTextAfter(parent, `)${code}`);
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} else {
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yield fixer.insertTextAfter(parent, code);
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}
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yield fixSpaceAroundKeyword(fixer, node, context);
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};
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}
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}
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return problem;
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});
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};
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/** @type {import('eslint').Rule.RuleModule} */
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const config = {
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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: 'Disallow unreadable array destructuring.',
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recommended: 'unopinionated',
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},
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fixable: 'code',
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messages,
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},
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};
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export default config;
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