refactor: migrate to ts and remove chai-as-promised (#399)

.mocharc.yml

@@ -1,3 +1,3 @@
 reporter: spec
 opts: false
-spec: "test/*.spec.js"
+spec: "test/*.spec.ts"

lib/camel_case_keys.ts

@@ -27,7 +27,7 @@ function camelCaseKeys(obj: object) {
   if (typeof obj !== 'object') throw new TypeError('obj must be an object!');
 
   const keys = Object.keys(obj);
-  const result = {};
+  const result: Record<string, any> = {};
 
   for (const oldKey of keys) {
     const newKey = toCamelCase(oldKey);

lib/full_url_for.ts

@@ -2,7 +2,7 @@ import { parse } from 'url';
 import encodeURL from './encode_url';
 import prettyUrls from './pretty_urls';
 import Cache from './cache';
-const cache = new Cache();
+const cache = new Cache<string>();
 
 function fullUrlForHelper(path = '/') {
   const { config } = this;

lib/html_tag.ts

@@ -14,8 +14,8 @@ function encSrcset(str: string) {
   return str;
 }
 
-function htmlTag(tag: string, attrs: {
-  [key: string]: string | boolean | null | undefined;
+function htmlTag(tag: string, attrs?: {
+  [key: string]: string | boolean | number | null | undefined;
 }, text?: string, escape = true) {
   if (!tag) throw new TypeError('tag is required!');
 

lib/toc_obj.ts

@@ -40,7 +40,7 @@ function tocObj(str: string, options = {}) {
 
   if (!headingsLen) return [];
 
-  const result = [];
+  const result: Result[] = [];
 
   for (let i = 0; i < headingsLen; i++) {
     const el = headings[i];

lib/truncate.ts

@@ -4,7 +4,7 @@ interface Options {
   separator?: string;
 }
 
-function truncate(str: string, options: Options = {}) {
+function truncate(str: string, options: Options = {}): string {
   if (typeof str !== 'string') throw new TypeError('str must be a string!');
 
   const length = options.length || 30;

package.json

@@ -34,12 +34,14 @@
   ],
   "license": "MIT",
   "devDependencies": {
+    "@types/chai": "^4.3.11",
     "@types/cross-spawn": "^6.0.2",
+    "@types/mocha": "^10.0.6",
     "@types/node": "^18.11.8",
     "@types/prismjs": "^1.26.0",
+    "@types/rewire": "^2.5.30",
     "c8": "^9.1.0",
     "chai": "^4.3.6",
-    "chai-as-promised": "^7.1.1",
     "domhandler": "^5.0.3",
     "eslint": "^8.23.0",
     "eslint-config-hexo": "^5.0.0",

test/.eslintrc.json

@@ -1,7 +1,13 @@
 {
-  "extends": "hexo/test",
+  "extends": "hexo/ts-test",
   "rules": {
+    "@typescript-eslint/no-explicit-any": 0,
+    "@typescript-eslint/ban-ts-comment": 0,
+    "@typescript-eslint/no-non-null-assertion": 0,
+    "node/no-unsupported-features/es-syntax": 0,
     "@typescript-eslint/no-var-requires": 0,
-    "@typescript-eslint/no-empty-function": 0
+    "@typescript-eslint/no-empty-function": 0,
+    "@typescript-eslint/no-unused-vars": 0,
+    "node/no-missing-require": 0
   }
 }

test/cache.spec.js → test/cache.spec.ts

@@ -1,14 +1,13 @@
-'use strict';
-
-require('chai').should();
+import chai from 'chai';
+import Cache from '../lib/cache';
+chai.should();
 
 describe('Cache', () => {
-  const Cache = require('../dist/cache');
-  const cache = new Cache();
+  const cache = new Cache<number>();
 
   it('get & set', () => {
     cache.set('foo', 123);
-    cache.get('foo').should.eql(123);
+    cache.get('foo')!.should.eql(123);
   });
 
   it('size', () => {

test/cache_stream.spec.js → test/cache_stream.spec.ts

@@ -1,12 +1,10 @@
-'use strict';
+import chai from 'chai';
+import { Readable } from 'stream';
+import CacheStream from '../lib/cache_stream';
 
-require('chai').should();
-
-const { Readable } = require('stream');
+chai.should();
 
 describe('CacheStream', () => {
-  const CacheStream = require('../dist/cache_stream');
-
   it('default', () => {
     const src = new Readable();
     const cacheStream = new CacheStream();

test/camel_case_keys.spec.js → test/camel_case_keys.spec.ts

@@ -1,10 +1,8 @@
-'use strict';
-
-require('chai').should();
+import chai from 'chai';
+import camelCaseKeys from '../lib/camel_case_keys';
+chai.should();
 
 describe('camelCaseKeys', () => {
-  const camelCaseKeys = require('../dist/camel_case_keys');
-
   it('default', () => {
     const result = camelCaseKeys({
       foo_bar: 'test'

test/color.spec.js → test/color.spec.ts

@@ -1,10 +1,8 @@
-'use strict';
-
-require('chai').should();
+import chai from 'chai';
+import Color from '../lib/color';
+chai.should();
 
 describe('color', () => {
-  const Color = require('../dist/color');
-
   it('name', () => {
     const red = new Color('red');
     const pink = new Color('pink');
@@ -67,6 +65,7 @@ describe('color', () => {
   it('invalid color', () => {
     let color;
     try {
+      // @ts-ignore
       color = new Color(200);
     } catch (e) {
       e.message.should.eql('color is required!');

test/decode_url.spec.js → test/decode_url.spec.ts

@@ -1,10 +1,8 @@
-'use strict';
-
-require('chai').should();
+import chai from 'chai';
+import decodeURL from '../lib/decode_url';
+chai.should();
 
 describe('decodeURL', () => {
-  const decodeURL = require('../dist/decode_url');
-
   it('regular', () => {
     const content = 'http://foo.com/';
     decodeURL(content).should.eql(content);

test/deep_merge.spec.js → test/deep_merge.spec.ts

@@ -1,36 +1,34 @@
-'use strict';
-
-require('chai').should();
+import chai from 'chai';
+import deepMerge from '../lib/deep_merge';
+chai.should();
 
 // The test is modified based on https://github.com/jonschlinkert/merge-deep/blob/master/test.js
 
 describe('deepMerge()', () => {
-  const deepMerge = require('../dist/deep_merge');
-
   it('should act as lodash.merge', () => {
-    const obj1 = { 'a': [{ 'b': 2 }, { 'd': 4 }] };
-    const obj2 = { 'a': [{ 'c': 3 }, { 'e': 5 }] };
+    const obj1: any = { 'a': [{ 'b': 2 }, { 'd': 4 }] };
+    const obj2: any = { 'a': [{ 'c': 3 }, { 'e': 5 }] };
 
     const expected = { 'a': [{ 'b': 2, 'c': 3 }, { 'd': 4, 'e': 5 }] };
-
-    deepMerge(obj1, obj2).should.eql(expected);
+    const result: any = deepMerge(obj1, obj2);
+    result.should.eql(expected);
   });
 
   it('should do a deep merge', () => {
-    const obj1 = {a: {b: 1, c: 1, d: {e: 1, f: 1}}};
-    const obj2 = {a: {b: 2, d: {f: 'f'} }};
+    const obj1: any = {a: {b: 1, c: 1, d: {e: 1, f: 1}}};
+    const obj2: any = {a: {b: 2, d: {f: 'f'} }};
 
     const expected = {a: {b: 2, c: 1, d: {e: 1, f: 'f'} }};
-
-    deepMerge(obj1, obj2).should.eql(expected);
+    const result: any = deepMerge(obj1, obj2);
+    result.should.eql(expected);
   });
 
   it('should not merge strings', () => {
-    const obj1 = {a: 'fooo'};
-    const obj2 = {a: {b: 2, d: {f: 'f'} }};
-    const obj3 = {a: 'bar'};
+    const obj1: any = {a: 'fooo'};
+    const obj2: any = {a: {b: 2, d: {f: 'f'} }};
+    const obj3: any = {a: 'bar'};
 
-    const result = deepMerge(deepMerge(obj1, obj2), obj3);
+    const result: any = deepMerge(deepMerge(obj1, obj2), obj3);
     result.a.should.eql('bar');
   });
 
@@ -45,10 +43,11 @@ describe('deepMerge()', () => {
   });
 
   it('should not merge an objects into an array', () => {
-    const obj1 = {a: {b: 1}};
-    const obj2 = {a: ['foo', 'bar']};
+    const obj1: any = {a: {b: 1}};
+    const obj2: any = {a: ['foo', 'bar']};
 
-    deepMerge(obj1, obj2).should.eql({a: ['foo', 'bar']});
+    const result: any = deepMerge(obj1, obj2);
+    result.should.eql({a: ['foo', 'bar']});
   });
 
   it('should not affect target & source', () => {
@@ -68,10 +67,10 @@ describe('deepMerge()', () => {
   });
 
   it('should deep clone arrays during merge', () => {
-    const obj1 = {a: [1, 2, [3, 4]]};
-    const obj2 = {b: [5, 6]};
+    const obj1: any = {a: [1, 2, [3, 4]]};
+    const obj2: any = {b: [5, 6]};
 
-    const result = deepMerge(obj1, obj2);
+    const result: any = deepMerge(obj1, obj2);
 
     result.a.should.eql([1, 2, [3, 4]]);
     result.a[2].should.eql([3, 4]);

test/encode_url.spec.js → test/encode_url.spec.ts

@@ -1,10 +1,8 @@
-'use strict';
-
-require('chai').should();
+import chai from 'chai';
+import encodeURL from '../lib/encode_url';
+chai.should();
 
 describe('encodeURL', () => {
-  const encodeURL = require('../dist/encode_url');
-
   it('regular', () => {
     const content = 'http://foo.com/';
     encodeURL(content).should.eql(content);

test/escape_diacritic.spec.js → test/escape_diacritic.spec.ts

@@ -1,10 +1,8 @@
-'use strict';
-
-require('chai').should();
+import chai from 'chai';
+import escapeDiacritic from '../lib/escape_diacritic';
+chai.should();
 
 describe('escapeDiacritic', () => {
-  const escapeDiacritic = require('../dist/escape_diacritic');
-
   it('default', () => {
     escapeDiacritic('Hell\u00F2 w\u00F2rld').should.eql('Hello world');
   });

test/escape_html.spec.js → test/escape_html.spec.ts

@@ -1,10 +1,8 @@
-'use strict';
-
-require('chai').should();
+import chai from 'chai';
+import escapeHTML from '../lib/escape_html';
+chai.should();
 
 describe('escapeHTML', () => {
-  const escapeHTML = require('../dist/escape_html');
-
   it('default', () => {
     escapeHTML('<p class="foo">Hello "world".</p>').should.eql('&lt;p class&#x3D;&quot;foo&quot;&gt;Hello &quot;world&quot;.&lt;&#x2F;p&gt;');
   });

test/escape_regexp.spec.js → test/escape_regexp.spec.ts

@@ -1,10 +1,8 @@
-'use strict';
-
-require('chai').should();
+import chai from 'chai';
+import escapeRegExp from '../lib/escape_regexp';
+chai.should();
 
 describe('escapeRegExp', () => {
-  const escapeRegExp = require('../dist/escape_regexp');
-
   it('default', () => {
     escapeRegExp('hello*world').should.eql('hello\\*world');
   });

test/full_url_for.spec.js → test/full_url_for.spec.ts

@@ -1,13 +1,15 @@
-'use strict';
+import chai from 'chai';
+import fullUrlForHelper from '../lib/full_url_for';
+chai.should();
 
 describe('full_url_for', () => {
-  const ctx = {
+  const ctx: any = {
     config: {
       url: 'http://example.com'
     }
   };
 
-  const fullUrlFor = require('../dist/full_url_for').bind(ctx);
+  const fullUrlFor: typeof fullUrlForHelper = fullUrlForHelper.bind(ctx);
 
   it('internal url - root directory', () => {
     ctx.config.url = 'https://example.com';

test/gravatar.spec.js → test/gravatar.spec.ts

@@ -1,10 +1,7 @@
-'use strict';
-
-const { createHash } = require('crypto');
+import { createHash } from 'crypto';
+import gravatar from '../lib/gravatar';
 
 describe('gravatar', () => {
-  const gravatar = require('../dist/gravatar');
-
   function md5(str) {
     return createHash('md5').update(str).digest('hex');
   }

test/hash.spec.js → test/hash.spec.ts

@@ -1,25 +1,21 @@
-'use strict';
-
-require('chai').should();
-const crypto = require('crypto');
+import { createHash } from 'crypto';
+import { hash, createSha1Hash } from '../lib/hash';
 
 function sha1(content) {
-  const hash = crypto.createHash('sha1');
+  const hash = createHash('sha1');
   hash.update(content);
 
   return hash.digest();
 }
 
 describe('hash', () => {
-  const hash = require('../dist/hash');
-
   it('hash', () => {
     const content = '123456';
-    hash.hash(content).should.eql(sha1(content));
+    hash(content).should.eql(sha1(content));
   });
 
   it('createSha1Hash', () => {
-    const _sha1 = hash.createSha1Hash();
+    const _sha1 = createSha1Hash();
     const content = '123456';
     _sha1.update(content);
     _sha1.digest().should.eql(sha1(content));
@@ -28,7 +24,7 @@ describe('hash', () => {
   it('createSha1Hash - streamMode', () => {
     const content1 = '123456';
     const content2 = '654321';
-    const stream = hash.createSha1Hash();
+    const stream = createSha1Hash();
     // explicit convert
     stream.write(Buffer.from(content1));
     // implicit convert