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vscode-react-native/tools

tools/gulp-extras.js

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1// Copyright (c) Microsoft Corporation. All rights reserved.
2// Licensed under the MIT license. See LICENSE file in the project root for details.
3"use strict";
4
5var fs = require("fs");
6var gutil = require("gulp-util");
7var path = require("path");
8var through = require("through2");
9
10/**
11 * Pretty logger using gutil.log
12 * @param {string} pluginName Name of the pluginName
13 * @param {Object} file A gulp file to report on
14 * @param {string} message The error message to display
15 */
16var logError = function(pluginName, file, message) {
17 var sourcePath = path.relative(__dirname, file.path).replace("../","");
18 gutil.log(`[${gutil.colors.cyan(pluginName)}] ${gutil.colors.red("error")} ${sourcePath}: ${message}`);
19};
20
21/**
22 * Helper function to return a list of matches for a given pattern
23 * @param {string|RegExp} pattern The pattern to match against
24 * @param {string} text The text to search
25 * @returns {string[]} An array of matches
26 */
27var find = function(pattern, text) {
28 var results = [];
29 text.toString().replace(pattern, function(match) {
30 results.push(match);
31 });
32
33 return results;
34};
35
36/**
37 * Plugin to verify the Microsoft copyright notice is present
38 */
39var checkCopyright = function() {
40 var re = /\/\/ Copyright \(c\) Microsoft Corporation. All rights reserved.\s+\/\/ Licensed under the MIT license. See LICENSE file in the project root for details.\s+/
41
42 return through.obj(function(file, encoding, callback) {
43 if (file.isBuffer() && !file.path.endsWith(".d.ts")) {
44 var fileContents = file.contents.toString(encoding);
45 var matches = re.exec(fileContents);
46
47 if (!matches) {
48 logError("check-copyright", file, "missing copyright notice");
49 }
50 }
51
52 callback(null, file);
53 });
54};
55
56/**
57 * Helper function to check if a file exists case sensitive
58 * @param {string} filePath The path to check
59 * @returns {boolean} If the path exists case sensitive
60 */
61var existsCaseSensitive = function(filePath) {
62 if (fs.existsSync(filePath)) {
63 var fileName = path.basename(filePath);
64 return fs.readdirSync(path.dirname(filePath)).indexOf(fileName) !== -1;
65 }
66
67 return false;
68};
69
70/**
71 * Plugin to verify if import statements use correct casing
72 */
73var checkImports = function() {
74 var re = /(?:\s|^)(?:[^\n:]*).*from ["'](\.[^"']*)["'];/g;
75
76 return through.obj(function(file, encoding, callback) {
77 if (file.isBuffer() && !file.path.endsWith(".d.ts")) {
78 var fileContents = file.contents.toString(encoding);
79 var importStatements = find(re, fileContents);
80 var workingDirectory = path.dirname(file.path);
81
82 importStatements.forEach(function(importStatement) {
83 var modulePath = re.exec(importStatement);
84 if (modulePath && modulePath[1]) {
85 var moduleFilePath = path.resolve(workingDirectory, modulePath[1] + ".ts");
86
87 if (!existsCaseSensitive(moduleFilePath)) {
88 logError("check-imports", file, `unresolved import: ${modulePath[1]}`);
89 }
90 }
91 });
92 }
93
94 callback(null, file);
95 });
96};
97
98module.exports = {
99 checkCopyright: checkCopyright,
100 checkImports: checkImports
101}