56 lines
1.8 KiB
JavaScript
56 lines
1.8 KiB
JavaScript
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/**
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* @author Toru Nagashima
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* See LICENSE file in root directory for full license.
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*/
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"use strict"
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const path = require("path")
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const exists = require("./exists")
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const getAllowModules = require("./get-allow-modules")
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const isTypescript = require("./is-typescript")
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const mapTypescriptExtension = require("../util/map-typescript-extension")
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/**
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* Checks whether or not each requirement target exists.
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*
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* It looks up the target according to the logic of Node.js.
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* See Also: https://nodejs.org/api/modules.html
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*
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* @param {RuleContext} context - A context to report.
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* @param {ImportTarget[]} targets - A list of target information to check.
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* @returns {void}
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*/
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module.exports = function checkExistence(context, targets) {
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const allowed = new Set(getAllowModules(context))
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for (const target of targets) {
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const missingModule =
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target.moduleName != null &&
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!allowed.has(target.moduleName) &&
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target.filePath == null
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let missingFile = target.moduleName == null && !exists(target.filePath)
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if (missingFile && isTypescript(context)) {
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const parsed = path.parse(target.filePath)
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const reversedExt = mapTypescriptExtension(
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context,
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target.filePath,
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parsed.ext,
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true
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)
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const reversedPath =
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path.resolve(parsed.dir, parsed.name) + reversedExt
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missingFile = target.moduleName == null && !exists(reversedPath)
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}
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if (missingModule || missingFile) {
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context.report({
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node: target.node,
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loc: target.node.loc,
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message: '"{{name}}" is not found.',
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data: target,
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})
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}
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}
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}
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