Initial stopwatch CLI
This commit is contained in:
@@ -0,0 +1,2 @@
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node_modules/
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dist/
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@@ -0,0 +1,48 @@
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# stopwatch-cli
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A minimal terminal stopwatch with an interactive TUI.
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```
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┌─────────────────────┐
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│ 00:00:00.0 │
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│ ● RUNNING │
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└─────────────────────┘
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[space] start/pause [r] reset [q] quit
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```
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## Install
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```bash
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npm install
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```
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## Run
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```bash
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# Build and run
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npm run build
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npm start
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# Run directly (no build step)
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npm run dev
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```
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## Test
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```bash
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npm test
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```
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## Key bindings
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| Key | Action |
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|---------|------------------|
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| `space` | Start / Pause |
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| `r` | Reset to zero |
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| `q` | Quit |
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| `ctrl+c`| Quit |
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## Time format
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Elapsed time is shown as `HH:MM:SS.d` where `d` is tenths of a second.
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Generated
+566
@@ -0,0 +1,566 @@
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"openharmony"
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],
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"node": ">=18"
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}
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"resolved": "https://registry.npmjs.org/@esbuild/sunos-x64/-/sunos-x64-0.28.1.tgz",
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"cpu": [
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"x64"
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],
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"dev": true,
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"license": "MIT",
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"optional": true,
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"sunos"
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"engines": {
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"node": ">=18"
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}
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"node_modules/@esbuild/win32-arm64": {
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"version": "0.28.1",
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"resolved": "https://registry.npmjs.org/@esbuild/win32-arm64/-/win32-arm64-0.28.1.tgz",
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"integrity": "sha512-lCv9eK/H6ZJWbE7bh2nw54CZ9M2nupBxJcTsdk/QQnWkdSjKGuxmmH8/GWrlT1eMmZfn4dGcCjRte397WqfQXA==",
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"cpu": [
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"arm64"
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],
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"dev": true,
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"license": "MIT",
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"optional": true,
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"os": [
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"win32"
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||||
],
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"engines": {
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"node": ">=18"
|
||||
}
|
||||
},
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"node_modules/@esbuild/win32-ia32": {
|
||||
"version": "0.28.1",
|
||||
"resolved": "https://registry.npmjs.org/@esbuild/win32-ia32/-/win32-ia32-0.28.1.tgz",
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"integrity": "sha512-zvb/mB2bSCoJOpoCBgYKKpX6YM6mJBlBUVUtVj41DlZJVEB6/0CKlRYxP5wWl1C1ILiCoAU5wZZ4q1P3qeS6Eg==",
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"cpu": [
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"ia32"
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],
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"dev": true,
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||||
"license": "MIT",
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||||
"optional": true,
|
||||
"os": [
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||||
"win32"
|
||||
],
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||||
"engines": {
|
||||
"node": ">=18"
|
||||
}
|
||||
},
|
||||
"node_modules/@esbuild/win32-x64": {
|
||||
"version": "0.28.1",
|
||||
"resolved": "https://registry.npmjs.org/@esbuild/win32-x64/-/win32-x64-0.28.1.tgz",
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||||
"integrity": "sha512-bm4Mowrv+GXMlpWX++EcXw/iLyd1o3+bJkC2DkWXYVvgZCqD/bSj9ctZeAMC3cIxgjRVR2Dufaiu4YPxr5gW1A==",
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||||
"cpu": [
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||||
"x64"
|
||||
],
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||||
"dev": true,
|
||||
"license": "MIT",
|
||||
"optional": true,
|
||||
"os": [
|
||||
"win32"
|
||||
],
|
||||
"engines": {
|
||||
"node": ">=18"
|
||||
}
|
||||
},
|
||||
"node_modules/@types/node": {
|
||||
"version": "22.20.0",
|
||||
"resolved": "https://registry.npmjs.org/@types/node/-/node-22.20.0.tgz",
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||||
"integrity": "sha512-QWlFW2wf3nTjC13/DqRnBpR4ZO36VJH/JVBkA/vcnmbTBNQIlnObqyqZE1tUR7+Ni23Lda8R1BxMfbXRpCUx5g==",
|
||||
"dev": true,
|
||||
"license": "MIT",
|
||||
"dependencies": {
|
||||
"undici-types": "~6.21.0"
|
||||
}
|
||||
},
|
||||
"node_modules/esbuild": {
|
||||
"version": "0.28.1",
|
||||
"resolved": "https://registry.npmjs.org/esbuild/-/esbuild-0.28.1.tgz",
|
||||
"integrity": "sha512-HrJrvZv5ayxBzPfwphOoNzkzOIIlifzk0KJrGK2c8R4+LKpMtpYLQeUdjnwjWv/LZlkH2laZk+4w78pi99D4Vw==",
|
||||
"dev": true,
|
||||
"hasInstallScript": true,
|
||||
"license": "MIT",
|
||||
"bin": {
|
||||
"esbuild": "bin/esbuild"
|
||||
},
|
||||
"engines": {
|
||||
"node": ">=18"
|
||||
},
|
||||
"optionalDependencies": {
|
||||
"@esbuild/aix-ppc64": "0.28.1",
|
||||
"@esbuild/android-arm": "0.28.1",
|
||||
"@esbuild/android-arm64": "0.28.1",
|
||||
"@esbuild/android-x64": "0.28.1",
|
||||
"@esbuild/darwin-arm64": "0.28.1",
|
||||
"@esbuild/darwin-x64": "0.28.1",
|
||||
"@esbuild/freebsd-arm64": "0.28.1",
|
||||
"@esbuild/freebsd-x64": "0.28.1",
|
||||
"@esbuild/linux-arm": "0.28.1",
|
||||
"@esbuild/linux-arm64": "0.28.1",
|
||||
"@esbuild/linux-ia32": "0.28.1",
|
||||
"@esbuild/linux-loong64": "0.28.1",
|
||||
"@esbuild/linux-mips64el": "0.28.1",
|
||||
"@esbuild/linux-ppc64": "0.28.1",
|
||||
"@esbuild/linux-riscv64": "0.28.1",
|
||||
"@esbuild/linux-s390x": "0.28.1",
|
||||
"@esbuild/linux-x64": "0.28.1",
|
||||
"@esbuild/netbsd-arm64": "0.28.1",
|
||||
"@esbuild/netbsd-x64": "0.28.1",
|
||||
"@esbuild/openbsd-arm64": "0.28.1",
|
||||
"@esbuild/openbsd-x64": "0.28.1",
|
||||
"@esbuild/openharmony-arm64": "0.28.1",
|
||||
"@esbuild/sunos-x64": "0.28.1",
|
||||
"@esbuild/win32-arm64": "0.28.1",
|
||||
"@esbuild/win32-ia32": "0.28.1",
|
||||
"@esbuild/win32-x64": "0.28.1"
|
||||
}
|
||||
},
|
||||
"node_modules/fsevents": {
|
||||
"version": "2.3.3",
|
||||
"resolved": "https://registry.npmjs.org/fsevents/-/fsevents-2.3.3.tgz",
|
||||
"integrity": "sha512-5xoDfX+fL7faATnagmWPpbFtwh/R77WmMMqqHGS65C3vvB0YHrgF+B1YmZ3441tMj5n63k0212XNoJwzlhffQw==",
|
||||
"dev": true,
|
||||
"hasInstallScript": true,
|
||||
"license": "MIT",
|
||||
"optional": true,
|
||||
"os": [
|
||||
"darwin"
|
||||
],
|
||||
"engines": {
|
||||
"node": "^8.16.0 || ^10.6.0 || >=11.0.0"
|
||||
}
|
||||
},
|
||||
"node_modules/tsx": {
|
||||
"version": "4.23.0",
|
||||
"resolved": "https://registry.npmjs.org/tsx/-/tsx-4.23.0.tgz",
|
||||
"integrity": "sha512-eUdUIaCr963q2h5u3+QwvYp0+eqPvn+egeqZUm0hwERCqqx1E3kK5ehbGCvqSE5MQAULr67ww0cA3jKc3YkM1w==",
|
||||
"dev": true,
|
||||
"license": "MIT",
|
||||
"dependencies": {
|
||||
"esbuild": "~0.28.0"
|
||||
},
|
||||
"bin": {
|
||||
"tsx": "dist/cli.mjs"
|
||||
},
|
||||
"engines": {
|
||||
"node": ">=18.0.0"
|
||||
},
|
||||
"optionalDependencies": {
|
||||
"fsevents": "~2.3.3"
|
||||
}
|
||||
},
|
||||
"node_modules/typescript": {
|
||||
"version": "5.9.3",
|
||||
"resolved": "https://registry.npmjs.org/typescript/-/typescript-5.9.3.tgz",
|
||||
"integrity": "sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw==",
|
||||
"dev": true,
|
||||
"license": "Apache-2.0",
|
||||
"bin": {
|
||||
"tsc": "bin/tsc",
|
||||
"tsserver": "bin/tsserver"
|
||||
},
|
||||
"engines": {
|
||||
"node": ">=14.17"
|
||||
}
|
||||
},
|
||||
"node_modules/undici-types": {
|
||||
"version": "6.21.0",
|
||||
"resolved": "https://registry.npmjs.org/undici-types/-/undici-types-6.21.0.tgz",
|
||||
"integrity": "sha512-iwDZqg0QAGrg9Rav5H4n0M64c3mkR59cJ6wQp+7C4nI0gsmExaedaYLNO44eT4AtBBwjbTiGPMlt2Md0T9H9JQ==",
|
||||
"dev": true,
|
||||
"license": "MIT"
|
||||
}
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,17 @@
|
||||
{
|
||||
"name": "stopwatch-cli",
|
||||
"version": "1.0.0",
|
||||
"description": "A minimal terminal stopwatch with TUI",
|
||||
"type": "module",
|
||||
"scripts": {
|
||||
"build": "tsc",
|
||||
"start": "node dist/index.js",
|
||||
"dev": "tsx src/index.ts",
|
||||
"test": "node --import tsx --test src/**/*.test.ts"
|
||||
},
|
||||
"devDependencies": {
|
||||
"@types/node": "^22.0.0",
|
||||
"tsx": "^4.19.0",
|
||||
"typescript": "^5.6.0"
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,62 @@
|
||||
import * as readline from 'readline';
|
||||
import { Stopwatch, formatTime } from './stopwatch.js';
|
||||
|
||||
const sw = new Stopwatch();
|
||||
|
||||
const HIDE_CURSOR = '\x1b[?25l';
|
||||
const SHOW_CURSOR = '\x1b[?25h';
|
||||
const CLEAR = '\x1b[2J\x1b[H';
|
||||
const BOLD = '\x1b[1m';
|
||||
const DIM = '\x1b[2m';
|
||||
const GREEN = '\x1b[32m';
|
||||
const YELLOW = '\x1b[33m';
|
||||
const CYAN = '\x1b[36m';
|
||||
const RESET = '\x1b[0m';
|
||||
|
||||
function render(): void {
|
||||
const time = formatTime(sw.getElapsedMs());
|
||||
const running = sw.isRunning();
|
||||
const stateLabel = running ? `${GREEN}● RUNNING${RESET}` : `${YELLOW}⏸ PAUSED ${RESET}`;
|
||||
|
||||
const out = [
|
||||
CLEAR,
|
||||
'',
|
||||
` ${DIM}┌─────────────────────┐${RESET}`,
|
||||
` ${DIM}│${RESET} ${BOLD}${CYAN}${time}${RESET} ${DIM}│${RESET}`,
|
||||
` ${DIM}│${RESET} ${stateLabel} ${DIM}│${RESET}`,
|
||||
` ${DIM}└─────────────────────┘${RESET}`,
|
||||
'',
|
||||
` ${DIM}[space]${RESET} start/pause ${DIM}[r]${RESET} reset ${DIM}[q]${RESET} quit`,
|
||||
'',
|
||||
].join('\n');
|
||||
|
||||
process.stdout.write(out);
|
||||
}
|
||||
|
||||
function cleanup(): void {
|
||||
clearInterval(timer);
|
||||
process.stdout.write(SHOW_CURSOR + '\n');
|
||||
}
|
||||
|
||||
readline.emitKeypressEvents(process.stdin);
|
||||
if (process.stdin.isTTY) {
|
||||
process.stdin.setRawMode(true);
|
||||
}
|
||||
|
||||
process.stdin.on('keypress', (_str, key) => {
|
||||
if (!key) return;
|
||||
if ((key.ctrl && key.name === 'c') || key.name === 'q') {
|
||||
cleanup();
|
||||
process.exit(0);
|
||||
} else if (key.name === 'space') {
|
||||
sw.toggle();
|
||||
render();
|
||||
} else if (key.name === 'r') {
|
||||
sw.reset();
|
||||
render();
|
||||
}
|
||||
});
|
||||
|
||||
process.stdout.write(HIDE_CURSOR);
|
||||
render();
|
||||
const timer = setInterval(render, 100);
|
||||
@@ -0,0 +1,92 @@
|
||||
import { test, describe, beforeEach } from 'node:test';
|
||||
import assert from 'node:assert/strict';
|
||||
import { Stopwatch, formatTime } from './stopwatch.js';
|
||||
|
||||
describe('formatTime', () => {
|
||||
test('zero milliseconds', () => {
|
||||
assert.equal(formatTime(0), '00:00:00.0');
|
||||
});
|
||||
|
||||
test('100ms = one tenth', () => {
|
||||
assert.equal(formatTime(100), '00:00:00.1');
|
||||
});
|
||||
|
||||
test('999ms = nine tenths', () => {
|
||||
assert.equal(formatTime(999), '00:00:00.9');
|
||||
});
|
||||
|
||||
test('1 second', () => {
|
||||
assert.equal(formatTime(1000), '00:00:01.0');
|
||||
});
|
||||
|
||||
test('1 minute', () => {
|
||||
assert.equal(formatTime(60_000), '00:01:00.0');
|
||||
});
|
||||
|
||||
test('1 hour', () => {
|
||||
assert.equal(formatTime(3_600_000), '01:00:00.0');
|
||||
});
|
||||
|
||||
test('1h 23m 45s 600ms', () => {
|
||||
const ms = (1 * 3600 + 23 * 60 + 45) * 1000 + 600;
|
||||
assert.equal(formatTime(ms), '01:23:45.6');
|
||||
});
|
||||
|
||||
test('hours over 99', () => {
|
||||
assert.equal(formatTime(100 * 3_600_000), '100:00:00.0');
|
||||
});
|
||||
});
|
||||
|
||||
describe('Stopwatch', () => {
|
||||
let sw: Stopwatch;
|
||||
|
||||
beforeEach(() => {
|
||||
sw = new Stopwatch();
|
||||
});
|
||||
|
||||
test('starts at zero, not running', () => {
|
||||
assert.equal(sw.getElapsedMs(), 0);
|
||||
assert.equal(sw.isRunning(), false);
|
||||
});
|
||||
|
||||
test('toggle starts the stopwatch', () => {
|
||||
sw.toggle();
|
||||
assert.equal(sw.isRunning(), true);
|
||||
});
|
||||
|
||||
test('toggle twice pauses it', () => {
|
||||
sw.toggle();
|
||||
sw.toggle();
|
||||
assert.equal(sw.isRunning(), false);
|
||||
});
|
||||
|
||||
test('elapsed time increases while running', async () => {
|
||||
sw.toggle();
|
||||
await new Promise(r => setTimeout(r, 50));
|
||||
assert.ok(sw.getElapsedMs() > 0, 'elapsed should be > 0 while running');
|
||||
});
|
||||
|
||||
test('elapsed time is preserved after pause', async () => {
|
||||
sw.toggle();
|
||||
await new Promise(r => setTimeout(r, 50));
|
||||
sw.toggle(); // pause
|
||||
const snapshot = sw.getElapsedMs();
|
||||
await new Promise(r => setTimeout(r, 50));
|
||||
assert.equal(sw.getElapsedMs(), snapshot, 'elapsed should not change while paused');
|
||||
});
|
||||
|
||||
test('reset zeroes elapsed and stops', async () => {
|
||||
sw.toggle();
|
||||
await new Promise(r => setTimeout(r, 30));
|
||||
sw.reset();
|
||||
assert.equal(sw.getElapsedMs(), 0);
|
||||
assert.equal(sw.isRunning(), false);
|
||||
});
|
||||
|
||||
test('can restart after reset', () => {
|
||||
sw.toggle();
|
||||
sw.reset();
|
||||
sw.toggle();
|
||||
assert.equal(sw.isRunning(), true);
|
||||
});
|
||||
});
|
||||
@@ -0,0 +1,47 @@
|
||||
export class Stopwatch {
|
||||
private startTime: number | null = null;
|
||||
private elapsed: number = 0;
|
||||
private _running: boolean = false;
|
||||
|
||||
toggle(): void {
|
||||
if (this._running) {
|
||||
this.elapsed += Date.now() - this.startTime!;
|
||||
this.startTime = null;
|
||||
this._running = false;
|
||||
} else {
|
||||
this.startTime = Date.now();
|
||||
this._running = true;
|
||||
}
|
||||
}
|
||||
|
||||
reset(): void {
|
||||
this.startTime = null;
|
||||
this.elapsed = 0;
|
||||
this._running = false;
|
||||
}
|
||||
|
||||
getElapsedMs(): number {
|
||||
if (this._running && this.startTime !== null) {
|
||||
return this.elapsed + (Date.now() - this.startTime);
|
||||
}
|
||||
return this.elapsed;
|
||||
}
|
||||
|
||||
isRunning(): boolean {
|
||||
return this._running;
|
||||
}
|
||||
}
|
||||
|
||||
export function formatTime(ms: number): string {
|
||||
const tenths = Math.floor(ms / 100) % 10;
|
||||
const totalSecs = Math.floor(ms / 1000);
|
||||
const secs = totalSecs % 60;
|
||||
const mins = Math.floor(totalSecs / 60) % 60;
|
||||
const hours = Math.floor(totalSecs / 3600);
|
||||
|
||||
const hh = String(hours).padStart(2, '0');
|
||||
const mm = String(mins).padStart(2, '0');
|
||||
const ss = String(secs).padStart(2, '0');
|
||||
|
||||
return `${hh}:${mm}:${ss}.${tenths}`;
|
||||
}
|
||||
@@ -0,0 +1,15 @@
|
||||
{
|
||||
"compilerOptions": {
|
||||
"target": "ES2022",
|
||||
"module": "NodeNext",
|
||||
"moduleResolution": "NodeNext",
|
||||
"outDir": "dist",
|
||||
"rootDir": "src",
|
||||
"strict": true,
|
||||
"esModuleInterop": true,
|
||||
"skipLibCheck": true,
|
||||
"declaration": true
|
||||
},
|
||||
"include": ["src"],
|
||||
"exclude": ["src/**/*.test.ts"]
|
||||
}
|
||||
Reference in New Issue
Block a user