61 lines
1.7 KiB
JavaScript
61 lines
1.7 KiB
JavaScript
'use strict'
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exports.__esModule = true
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const extname = require('path').extname
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const log = require('debug')('eslint-plugin-import:utils:ignore')
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// one-shot memoized
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let cachedSet, lastSettings
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function validExtensions(context) {
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if (cachedSet && context.settings === lastSettings) {
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return cachedSet
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}
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lastSettings = context.settings
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cachedSet = makeValidExtensionSet(context.settings)
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return cachedSet
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}
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function makeValidExtensionSet(settings) {
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// start with explicit JS-parsed extensions
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const exts = new Set(settings['import/extensions'] || [ '.js' ])
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// all alternate parser extensions are also valid
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if ('import/parsers' in settings) {
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for (let parser in settings['import/parsers']) {
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const parserSettings = settings['import/parsers'][parser]
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if (!Array.isArray(parserSettings)) {
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throw new TypeError('"settings" for ' + parser + ' must be an array')
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}
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parserSettings.forEach(ext => exts.add(ext))
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}
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}
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return exts
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}
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exports.getFileExtensions = makeValidExtensionSet
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exports.default = function ignore(path, context) {
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// check extension whitelist first (cheap)
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if (!hasValidExtension(path, context)) return true
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if (!('import/ignore' in context.settings)) return false
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const ignoreStrings = context.settings['import/ignore']
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for (let i = 0; i < ignoreStrings.length; i++) {
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const regex = new RegExp(ignoreStrings[i])
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if (regex.test(path)) {
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log(`ignoring ${path}, matched pattern /${ignoreStrings[i]}/`)
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return true
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}
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}
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return false
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}
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function hasValidExtension(path, context) {
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return validExtensions(context).has(extname(path))
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}
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exports.hasValidExtension = hasValidExtension
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