feat: typescript language support

.gitignore

@@ -116,3 +116,6 @@ dist
 .yarn/build-state.yml
 .yarn/install-state.gz
 .pnp.*
+
+
+.idea

src/index.ts

@@ -23,6 +23,7 @@ import { Ruby } from "./languages/ruby";
 import { Rust } from "./languages/rust";
 import { SQL } from "./languages/sql";
 import { YAML } from "./languages/yaml";
+import { Typescript } from "./languages/typescript";
 import { nearTop, getPoints } from "./points";
 import { convert } from "./shiki";
 import { shebangMap } from "./shebang";
@@ -51,7 +52,8 @@ const languages: Record<string, LanguagePattern[]> = {
   Ruby,
   Rust,
   SQL,
-  YAML
+  YAML,
+  Typescript
 };
 
 /**

src/languages/typescript.ts

@@ -0,0 +1,63 @@
+import type { LanguagePattern } from "../types";
+
+
+export const Typescript: LanguagePattern[] = [{
+  pattern: /(Readonly<|ReadonlyArray<|Array<|Record<|Pick<|Omit<|Exclude<|Extract<)/,
+  type: "constant.dictionary"
+},
+{
+  pattern: /\w+\[]/,
+  type: "keyword.other"
+},
+{
+  pattern: /:\s*\w+\s*</,
+  type: "keyword.control"
+},
+{
+  pattern: /\??:\s*(any|string|boolean|undefined|null|number|void|never|symbol|bigint)\s*/,
+  type: "constant.type"
+},
+{
+  pattern: /(let|const|var)*\s*\w*:\s*(any|string|boolean|undefined|null|number|void|never|symbol|bigint)\s*=/,
+  type: "constant.type"
+},
+{ pattern: /console\.log\s*\(/, type: "keyword.print" },
+{
+  pattern: /interface\s*(\w+)\s*{/,
+  type: "constant.type"
+},
+{
+  pattern: /enum\s*\w+\s*=/,
+  type: "constant.type"
+},
+{
+  pattern: /type\s*(\w+)\s*=/,
+  type: "constant.type"
+},
+{
+  pattern: /function\s+\w*\s*(<(\w*\s*)*>)?\((\w+\s*\??:\s*(\w+|({(\s*\w+\s*\??:\s*\w+\s*(,)?\s*)*})?)\s*(,)?\s*)*\)\s*:\s*\w+\s*{/,
+  type: "keyword.function"
+},
+{
+  pattern: /(\s*\w*\s*)(=)?\s+\w*\s*(<(\w*\s*)*>)?\((\w+\s*\??:\s*(\w+|({(\s*\w+\s*\??:\s*\w+\s*(,)?\s*)*})?)\s*(,)?\s*)*\)\s*:\s*\w+\s*(=>)\s*{/,
+  type: "keyword.function"
+},
+{
+  pattern: /(typeof|declare)\s+/,
+  type: "keyword"
+},
+{
+  pattern: /\s+as\s+/,
+  type: "keyword"
+},
+// Rust types
+{
+  pattern: /usize/,
+  type: "not"
+},
+//   Kotlin
+{
+  pattern: /Array<String>/,
+  type: "not"
+}
+];

tests/cpp.test.ts

@@ -33,7 +33,8 @@ test("hello world", () => {
     Rust: 0,
     SQL: 0,
     Unknown: 1,
-    YAML: 0
+    YAML: 0,
+    Typescript: 0,
   });
   assert.equal(code.linesOfCode, 1);
 });

tests/cs.test.ts

@@ -34,7 +34,8 @@ test("hello world", () => {
     Rust: -40,
     SQL: 0,
     Unknown: 1,
-    YAML: 0
+    YAML: 0,
+    Typescript: 0
   });
   assert.equal(code.linesOfCode, 2);
 });

tests/large.test.ts

@@ -682,7 +682,8 @@ test("large input", () => {
     Rust: 4,
     SQL: 22,
     Unknown: 1,
-    YAML: 4
+    YAML: 4,
+    Typescript: 2,
   });
   assert.equal(code.linesOfCode, 299);
 });

tests/typescript.test.ts

@@ -0,0 +1,182 @@
+import { test } from "uvu";
+import * as assert from "uvu/assert";
+import detectLang from "../src/index";
+
+test("hello world", () => {
+  const code = detectLang("console.log(\"Hello world!\" as string);");
+  assert.equal(code.language, "Typescript");
+});
+
+test("fizz buzz", () => {
+  const code = detectLang(`
+   const length: number = 100
+
+   const numberArrays: number[] = Array.from({length: length}, (_, i: number) => i)
+
+    numberArrays.forEach((item: number): void => {
+        if (item % 15 === 0) console.log('FizzBuzz' as string)
+        else if(item % 3 === 0) console.log('Fizz' as string)
+        else if (item % 5 === 0) console.log('Buzz' as string)
+    })
+  `);
+  assert.equal(code.language, "Typescript");
+});
+
+test("quick sort", () => {
+  const code = detectLang(`
+  function heapSort(arr: Array<number>): void {
+    heapify(arr)
+    let end: number = arr.length - 1
+    while (end > 0) {
+        [arr[end], arr[0]] = [arr[0], arr[end]]
+        end--
+        siftDown(arr, 0, end)
+    }
+}
+
+function heapify(arr: Array<number>): void {
+    let start: number = Math.floor(arr.length/2) - 1
+
+    while (start >= 0) {
+        siftDown(arr, start, arr.length - 1)
+        start--
+    }
+}
+
+function siftDown(arr: Array<number>, startPos: number, endPos: number): void {
+    let rootPos: number = startPos
+
+    while (rootPos * 2 + 1 <= endPos) {
+        let childPos: number = rootPos * 2 + 1
+        if (childPos + 1 <= endPos && arr[childPos] < arr[childPos + 1]) {
+            childPos++
+        }
+        if (arr[rootPos] < arr[childPos]) {
+            [arr[rootPos], arr[childPos]] = [arr[childPos], arr[rootPos]]
+            rootPos = childPos
+        } else {
+            return
+        }
+    }
+}
+test('test code', (): void => {
+    let arr: Array<number> = [12, 11, 15, 10, 9, 1, 2, 3, 13, 14, 4, 5, 6, 7, 8,]
+    const result: Array<number> = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15]
+    heapSort(arr)
+    expect(arr).toStrictEqual(result)
+})
+`);
+  assert.equal(code.language, "Typescript");
+});
+
+test("http server", () => {
+  const code = detectLang(`
+  const http = require('http');
+
+interface Error {
+    message: string
+}
+
+http.get('http://rosettacode.org', (resp: any): void => {
+
+    let data: string = '';
+
+    resp.on('data', (chunk: any): void => {
+        data += chunk;
+    });
+
+    resp.on('end', (): void => {
+        console.log("Data:", data);
+    });
+
+}).on("error", (err: Error): void => {
+    console.log("Error: " + err.message);
+});
+  `);
+
+  assert.equal(code.language, "Typescript");
+});
+
+test("longest palindrome", () => {
+  const code = detectLang(`
+  function isPalindrome(s: string): boolean {
+    return s === s.split('').reverse().join('')
+}
+
+function longestPalindrome(s: string): string {
+    if (s.length < 2)
+        return s
+
+    const unique: Set<string> = new Set(s)
+    if (unique.size === 1) {
+        return s
+    }
+
+    let startPos: number = 0
+    let nextPos: number = 1
+
+    let startCharSubstring: string = s[0]
+    let longestSubstring: string = s[0]
+    let curSubString: string = s[0] + s[1]
+
+
+    while (startPos !== s.length - 1) {
+        if (startCharSubstring === s[nextPos]) {
+            if (isPalindrome(curSubString) && curSubString.length > longestSubstring.length) {
+                longestSubstring = curSubString
+            }
+        }
+
+        if (nextPos === s.length - 1) {
+            startPos += 1
+            nextPos = startPos + 1
+            curSubString = s[startPos] + s[nextPos]
+            startCharSubstring = s[startPos]
+        } else {
+            nextPos += 1
+            curSubString += s[nextPos]
+        }
+    }
+
+    return longestSubstring
+}
+  `);
+  assert.equal(code.language, "Typescript");
+});
+
+test("vue 3 component code", () => {
+  const code = detectLang(`
+enum VARIANT {
+    'big'= 'BIG TITLE',
+    'small'= 'SMALL TITLE'
+}
+
+type Variants = 'big' | 'small'
+interface Props {
+    title?: string,
+    isView: string,
+    variant: Variants
+}
+
+interface Emits {
+    (e: 'click', item: string): void
+}
+
+const props = defineProps<Props>()
+
+const emit = defineEmits<Emits>()
+
+const newTitle = ref<string>('')
+
+const changeTitle = (): void => {
+    if (props.variant === 'big') {
+        newTitle.value = VARIANT.big
+    } else if (props.variant === 'small') {
+        newTitle.value = VARIANT.small
+    }
+}
+  `);
+  assert.equal(code.language, "Typescript");
+});
+
+test.run();