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85 lines
2.3 KiB
85 lines
2.3 KiB
3 years ago
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/**
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* @fileoverview Enforces component's data property to be a function.
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* @author Armano
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*/
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'use strict'
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const utils = require('../utils')
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/** @param {Token} token */
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function isOpenParen(token) {
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return token.type === 'Punctuator' && token.value === '('
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}
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/** @param {Token} token */
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function isCloseParen(token) {
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return token.type === 'Punctuator' && token.value === ')'
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}
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/**
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* @param {Expression} node
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* @param {SourceCode} sourceCode
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*/
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function getFirstAndLastTokens(node, sourceCode) {
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let first = sourceCode.getFirstToken(node)
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let last = sourceCode.getLastToken(node)
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// If the value enclosed by parentheses, update the 'first' and 'last' by the parentheses.
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while (true) {
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const prev = sourceCode.getTokenBefore(first)
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const next = sourceCode.getTokenAfter(last)
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if (isOpenParen(prev) && isCloseParen(next)) {
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first = prev
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last = next
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} else {
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return { first, last }
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}
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}
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}
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// ------------------------------------------------------------------------------
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// Rule Definition
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// ------------------------------------------------------------------------------
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module.exports = {
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meta: {
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type: 'problem',
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docs: {
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description: "enforce component's data property to be a function",
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categories: ['vue3-essential', 'essential'],
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url: 'https://eslint.vuejs.org/rules/no-shared-component-data.html'
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},
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fixable: 'code',
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schema: []
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},
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/** @param {RuleContext} context */
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create(context) {
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const sourceCode = context.getSourceCode()
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return utils.executeOnVueComponent(context, (obj) => {
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const invalidData = utils.findProperty(
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obj,
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'data',
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(p) =>
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p.value.type !== 'FunctionExpression' &&
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p.value.type !== 'ArrowFunctionExpression' &&
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p.value.type !== 'Identifier'
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)
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if (invalidData) {
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context.report({
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node: invalidData,
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message: '`data` property in component must be a function.',
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fix(fixer) {
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const tokens = getFirstAndLastTokens(invalidData.value, sourceCode)
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return [
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fixer.insertTextBefore(tokens.first, 'function() {\nreturn '),
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fixer.insertTextAfter(tokens.last, ';\n}')
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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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}
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