Vihren Atlas

lib/utils/apply-extends.ts

79 LOC · 79 covered · 0 uncovered · 24 ranges · 1132 concepts · 12 introducers · 794 tests

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Files with a broader (ancestor) concept 11

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Files with a narrower (descendant) concept 3

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1 > import {Dictionary, PlatformShim} from '../typings/common-types.js'; apply-extends.ts ×4
2 > import {YError} from '../yerror.js';
3 >
4 > let previouslyVisitedConfigs: string[] = [];
5 > let shim: PlatformShim;
6 > export function applyExtends(
7 > config: Dictionary, apply-extends.ts ×2
8 > cwd: string,
9 > mergeExtends: boolean,
10 > _shim: PlatformShim
11 > ): Dictionary {
12 > shim = _shim;
13 > let defaultConfig = {};
14 >
15 > if (Object.prototype.hasOwnProperty.call(config, 'extends')) {
16 > if (typeof config.extends !== 'string') return defaultConfig; apply-extends.ts ×3
17 > const isPath = /\.json|\..*rc$/.test(config.extends);
18 > let pathToDefault: string | null = null;
19 > if (!isPath) {
20 > try { apply-extends.ts ×1
21 > pathToDefault = import.meta.resolve(config.extends);
22 > } catch (_err) {
23 > // maybe the module uses key for some other reason, apply-extends.ts ×1
24 > // err on side of caution.
25 > return config;
26 > }
27 > } else { apply-extends.ts ×3
28 > pathToDefault = getPathToDefaultConfig(cwd, config.extends); apply-extends.ts ×2
29 > }
30 > apply-extends.ts ×3
31 > checkForCircularExtends(pathToDefault);
32 >
33 > previouslyVisitedConfigs.push(pathToDefault);
34 >
35 > defaultConfig = isPath
36 > ? JSON.parse(shim.readFileSync(pathToDefault, 'utf8'))
37 > : _shim.require(config.extends); apply-extends.ts ×3
38 > delete config.extends;
39 > defaultConfig = applyExtends(
40 > defaultConfig,
41 > shim.path.dirname(pathToDefault),
42 > mergeExtends,
43 > shim
44 > );
45 > }
46 > apply-extends.ts ×1
47 > previouslyVisitedConfigs = [];
48 >
49 > return mergeExtends
50 > ? mergeDeep(defaultConfig, config)
51 > : Object.assign({}, defaultConfig, config); apply-extends.ts ×2
52 > }
53 > apply-extends.ts ×4
54 > function checkForCircularExtends(cfgPath: string) { apply-extends.ts ×3
55 > if (previouslyVisitedConfigs.indexOf(cfgPath) > -1) {
56 > throw new YError(`Circular extended configurations: '${cfgPath}'.`); apply-extends.ts ×1
57 > }
59 > apply-extends.ts ×4
60 > function getPathToDefaultConfig(cwd: string, pathToExtend: string) { apply-extends.ts ×2
61 > return shim.path.resolve(cwd, pathToExtend);
62 > }
63 > apply-extends.ts ×4
64 > function mergeDeep(config1: Dictionary, config2: Dictionary) { apply-extends.ts ×3
65 > const target: Dictionary = {};
66 > function isObject(obj: Dictionary | any): obj is Dictionary {
67 > return obj && typeof obj === 'object' && !Array.isArray(obj); apply-extends.ts ×2
68 > }
69 > Object.assign(target, config1); apply-extends.ts ×3
70 > for (const key of Object.keys(config2)) {
71 > if (key === '__proto__') continue;
72 > if (isObject(config2[key]) && isObject(target[key])) {
73 > target[key] = mergeDeep(config1[key], config2[key]); apply-extends.ts ×1
74 > } else { apply-extends.ts ×2
75 > target[key] = config2[key];
76 > }
77 > } apply-extends.ts ×3
78 > return target;
79 > }