commit 85fa683a6d1deac6b2a6a0c8ad197ebde59da027 Author: Luna Date: Fri Jul 3 19:20:15 2026 +0000 Initial stopwatch CLI diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..b947077 --- /dev/null +++ b/.gitignore @@ -0,0 +1,2 @@ +node_modules/ +dist/ diff --git a/README.md b/README.md new file mode 100644 index 0000000..1edb54c --- /dev/null +++ b/README.md @@ -0,0 +1,48 @@ +# stopwatch-cli + +A minimal terminal stopwatch with an interactive TUI. + +``` + ┌─────────────────────┐ + │ 00:00:00.0 │ + │ ● RUNNING │ + └─────────────────────┘ + + [space] start/pause [r] reset [q] quit +``` + +## Install + +```bash +npm install +``` + +## Run + +```bash +# Build and run +npm run build +npm start + +# Run directly (no build step) +npm run dev +``` + +## Test + +```bash +npm test +``` + +## Key bindings + +| Key | Action | +|---------|------------------| +| `space` | Start / Pause | +| `r` | Reset to zero | +| `q` | Quit | +| `ctrl+c`| Quit | + +## Time format + +Elapsed time is shown as `HH:MM:SS.d` where `d` is tenths of a second. diff --git a/package-lock.json b/package-lock.json new file mode 100644 index 0000000..a02990d --- /dev/null +++ b/package-lock.json @@ -0,0 +1,566 @@ +{ + "name": "stopwatch-cli", + "version": "1.0.0", + "lockfileVersion": 3, + "requires": true, + "packages": { + "": { + "name": "stopwatch-cli", + "version": "1.0.0", + "devDependencies": { + "@types/node": "^22.0.0", + "tsx": "^4.19.0", + "typescript": "^5.6.0" + } + }, + "node_modules/@esbuild/aix-ppc64": { + "version": "0.28.1", + "resolved": "https://registry.npmjs.org/@esbuild/aix-ppc64/-/aix-ppc64-0.28.1.tgz", + "integrity": "sha512-Svl7tq8k/08+p6CXPpRjQ1fKX+1odH/BQbb48fV6fj3CWHhsoIOoY87w1oHXm0qEpkIK3ZfVgp0hed3XBXzXMQ==", + "cpu": [ + "ppc64" + ], + "dev": true, + "license": "MIT", + "optional": true, + "os": [ + "aix" + ], + "engines": { + "node": ">=18" + } + }, + "node_modules/@esbuild/android-arm": { + "version": "0.28.1", + "resolved": "https://registry.npmjs.org/@esbuild/android-arm/-/android-arm-0.28.1.tgz", + "integrity": "sha512-0k2F129Xdio1TdJfzJ8sy1Q47vUD2NnwdhiAf7drUN1EBTfPf4hsFCtmMgu/6m8JSzsBrlmVjudMBQqOfG8usQ==", + "cpu": [ + "arm" + ], + "dev": true, + "license": "MIT", + "optional": true, + "os": [ + "android" + ], + "engines": { + "node": ">=18" + } + }, + "node_modules/@esbuild/android-arm64": { + "version": "0.28.1", + "resolved": "https://registry.npmjs.org/@esbuild/android-arm64/-/android-arm64-0.28.1.tgz", + "integrity": "sha512-34EGEbCIAgosYz6goLcopX6Mo7NyGv9tfwEM2/7Ce2VcVRk568iSvniGWcUXIy7wEDR1wzolcxcriFVrWYcwBg==", + "cpu": [ + "arm64" + ], + "dev": true, + "license": "MIT", + "optional": true, + "os": [ + "android" + ], + "engines": { + "node": ">=18" + } + }, + "node_modules/@esbuild/android-x64": { + "version": "0.28.1", + "resolved": "https://registry.npmjs.org/@esbuild/android-x64/-/android-x64-0.28.1.tgz", + "integrity": "sha512-dbwY7ltSMDWsRatcRpCnES4F+im88OCUgGZjy52shC7GqHRE/cYlxNbB4Z4UpJswpcc4Qxd2oE/ufM0p61IKng==", + "cpu": [ + "x64" + ], + "dev": true, + "license": "MIT", + "optional": true, + "os": [ + "android" + ], + "engines": { + "node": ">=18" + } + }, + "node_modules/@esbuild/darwin-arm64": { + "version": "0.28.1", + "resolved": "https://registry.npmjs.org/@esbuild/darwin-arm64/-/darwin-arm64-0.28.1.tgz", + "integrity": "sha512-TZbWkQY7kvTAXbXUT7uVACR5cMHsDiSz9z7ZKAX/RTq/WJEk3QyRr0wZpNhBDX+/0CtdqUIJlOiodQcta6tY3Q==", + "cpu": [ + "arm64" + ], + "dev": true, + "license": "MIT", + "optional": true, + "os": [ + "darwin" + ], + "engines": { + "node": ">=18" + } + }, + "node_modules/@esbuild/darwin-x64": { + "version": "0.28.1", + "resolved": "https://registry.npmjs.org/@esbuild/darwin-x64/-/darwin-x64-0.28.1.tgz", + "integrity": "sha512-zfdzgK9ACBNZLI/CyHTOx81SyNbM6YXn7rxSgX97VjyiPl9W1i4Ka4fgKECEoFCKGpvBj5qArWIGgQjOwkgskQ==", + "cpu": [ + "x64" + ], + "dev": true, + "license": "MIT", + "optional": true, + "os": [ + "darwin" + ], + "engines": { + "node": ">=18" + } + }, + "node_modules/@esbuild/freebsd-arm64": { + "version": "0.28.1", + "resolved": "https://registry.npmjs.org/@esbuild/freebsd-arm64/-/freebsd-arm64-0.28.1.tgz", + "integrity": "sha512-wG2EA8ENdEI0qhkSZMjfqrdY+ziCYCPMmtZjjIwOmXFjmyzEHn+UUxk5of+SYsjtfs3VpnlC7QLzSI5hY/rOAw==", + "cpu": [ + "arm64" + ], + "dev": true, + "license": "MIT", + "optional": true, + "os": [ + "freebsd" + ], + "engines": { + "node": ">=18" + } + }, + "node_modules/@esbuild/freebsd-x64": { + "version": "0.28.1", + "resolved": "https://registry.npmjs.org/@esbuild/freebsd-x64/-/freebsd-x64-0.28.1.tgz", + "integrity": "sha512-i7dZ9vQgnvSCzi/rYCXNgtF/U+eKZNJBzu3eTQbRgHnM7tNSizLOkRFAl3qzVc/Op/u5YkHHa4pf/3DOYHthLQ==", + "cpu": [ + "x64" + ], + "dev": true, + "license": "MIT", + "optional": true, + "os": [ + "freebsd" + ], + "engines": { + "node": ">=18" + } + }, + "node_modules/@esbuild/linux-arm": { + "version": "0.28.1", + "resolved": "https://registry.npmjs.org/@esbuild/linux-arm/-/linux-arm-0.28.1.tgz", + "integrity": "sha512-qVXBOHQS+d5Y722GwJzJUtOLlX7km3CraOaGormF1pDtPd2C/l1SHRPgjLunLGe51Sh5YYWKMFDyV4SxgMQYTQ==", + "cpu": [ + "arm" + ], + "dev": true, + "license": "MIT", + "optional": true, + "os": [ + "linux" + ], + "engines": { + "node": ">=18" + } + }, + "node_modules/@esbuild/linux-arm64": { + "version": "0.28.1", + "resolved": "https://registry.npmjs.org/@esbuild/linux-arm64/-/linux-arm64-0.28.1.tgz", + "integrity": "sha512-yHs+0uc8+nvEAfAfxrWQKK5peSNzBc4PegcMO0EJ2hT71uA7vB8Ihg2e77R2P7SG5uYjPbHlLLmve4LLLRCf0g==", + "cpu": [ + "arm64" + ], + "dev": true, + "license": "MIT", + "optional": true, + "os": [ + "linux" + ], + "engines": { + "node": ">=18" + } + }, + "node_modules/@esbuild/linux-ia32": { + "version": "0.28.1", + "resolved": "https://registry.npmjs.org/@esbuild/linux-ia32/-/linux-ia32-0.28.1.tgz", + "integrity": "sha512-d1z4ZuP0ajrfz/FhGT4vv278rX8KnPPJx8i5+AtK7TYbx9Le9F1hyzurZpkEyjkGa9dUGhQow4C1NmeGvqxN2w==", + "cpu": [ + "ia32" + ], + "dev": true, + "license": "MIT", + "optional": true, + "os": [ + "linux" + ], + "engines": { + "node": ">=18" + } + }, + "node_modules/@esbuild/linux-loong64": { + "version": "0.28.1", + "resolved": "https://registry.npmjs.org/@esbuild/linux-loong64/-/linux-loong64-0.28.1.tgz", + "integrity": "sha512-M5sRjUVZrkm1OAPR3dlOYzNmN+loZKGVi1VUQGrwuqLcbR6qeAz+famMhjASeH3YVKvZz+zT1jlh/keC3Rj/lg==", + "cpu": [ + "loong64" + ], + "dev": true, + "license": "MIT", + "optional": true, + "os": [ + "linux" + ], + "engines": { + "node": ">=18" + } + }, + "node_modules/@esbuild/linux-mips64el": { + "version": "0.28.1", + "resolved": "https://registry.npmjs.org/@esbuild/linux-mips64el/-/linux-mips64el-0.28.1.tgz", + "integrity": "sha512-mRObBZeHh2OxcBFPWE/FjylkRgZdYuiTR3vaTozquCGOH14iP9oN4x4Ge81CoIDYQrXmIxpFumJBu5MtZpnQJQ==", + "cpu": [ + "mips64el" + ], + "dev": true, + "license": "MIT", + "optional": true, + "os": [ + "linux" + ], + "engines": { + "node": ">=18" + } + }, + "node_modules/@esbuild/linux-ppc64": { + "version": "0.28.1", + "resolved": "https://registry.npmjs.org/@esbuild/linux-ppc64/-/linux-ppc64-0.28.1.tgz", + "integrity": "sha512-slScBsMAb3GFDcdrCgLwZtPYRoH2H/youv10QiZyRjmsP48fznoveWytSgCI/R0ZcUgpc0ZhIUEx6LHts8yrfQ==", + "cpu": [ + "ppc64" + ], + "dev": true, + "license": "MIT", + "optional": true, + "os": [ + "linux" + ], + "engines": { + "node": ">=18" + } + }, + "node_modules/@esbuild/linux-riscv64": { + "version": "0.28.1", + "resolved": "https://registry.npmjs.org/@esbuild/linux-riscv64/-/linux-riscv64-0.28.1.tgz", + "integrity": "sha512-kw0owk1o0GFETUJyW0jc0G4Yzs0BHZn0JDZ8JRT088vjJYX777BAs1fDGxAC+q831qOs2DTC96mNsG2opdfyyQ==", + "cpu": [ + "riscv64" + ], + "dev": true, + "license": "MIT", + "optional": true, + "os": [ + "linux" + ], + "engines": { + "node": ">=18" + } + }, + "node_modules/@esbuild/linux-s390x": { + "version": "0.28.1", + "resolved": "https://registry.npmjs.org/@esbuild/linux-s390x/-/linux-s390x-0.28.1.tgz", + "integrity": "sha512-/lAIjX8aYFRByhh6L5rYtPEDRqa9de/4V/juOXcta5frjvzXO4/sqEtyytse0g3zZFuWu5cDN0MkLz2qRDD2Ag==", + "cpu": [ + "s390x" + ], + "dev": true, + "license": "MIT", + "optional": true, + "os": [ + "linux" + ], + "engines": { + "node": ">=18" + } + }, + "node_modules/@esbuild/linux-x64": { + "version": "0.28.1", + "resolved": "https://registry.npmjs.org/@esbuild/linux-x64/-/linux-x64-0.28.1.tgz", + "integrity": "sha512-u/anNYF2mmVOEDwLtnQ1wOr3EZ9sTNGLWrsYGYwHWzGA3Si84IOkHXlbWTD1NB+9/1lcnweYKO54uhxZydNzfA==", + "cpu": [ + "x64" + ], + "dev": true, + "license": "MIT", + "optional": true, + "os": [ + "linux" + ], + "engines": { + "node": ">=18" + } + }, + "node_modules/@esbuild/netbsd-arm64": { + "version": "0.28.1", + "resolved": "https://registry.npmjs.org/@esbuild/netbsd-arm64/-/netbsd-arm64-0.28.1.tgz", + "integrity": "sha512-oks0DYbLwWMmaakTsCb+zL4E+aHRVLom9IJZOAthMQEPiQmydXHkziYEsGYRx0uNV/IjEKGAV941JzH02pflqw==", + "cpu": [ + "arm64" + ], + "dev": true, + "license": "MIT", + "optional": true, + "os": [ + "netbsd" + ], + "engines": { + "node": ">=18" + } + }, + "node_modules/@esbuild/netbsd-x64": { + "version": "0.28.1", + "resolved": "https://registry.npmjs.org/@esbuild/netbsd-x64/-/netbsd-x64-0.28.1.tgz", + "integrity": "sha512-aeL6lAnN89Hz43Mlh1G8ARasbuoYvSITDEx0tHh5b7jJnHcssqgjy9Yx430GDpmCa6OyrKoS0aNRjKundRizGg==", + "cpu": [ + "x64" + ], + "dev": true, + "license": "MIT", + "optional": true, + "os": [ + "netbsd" + ], + "engines": { + "node": ">=18" + } + }, + "node_modules/@esbuild/openbsd-arm64": { + "version": "0.28.1", + "resolved": "https://registry.npmjs.org/@esbuild/openbsd-arm64/-/openbsd-arm64-0.28.1.tgz", + "integrity": "sha512-MEFJe5C3R8pwXdZ5Y21oo6m7ePiS0d9pWucn99O/wvyJZChoIQKrQDxKrGeW8F5+T0okTHesAmDeiHDTIq0V/Q==", + "cpu": [ + "arm64" + ], + "dev": true, + "license": "MIT", + "optional": true, + "os": [ + "openbsd" + ], + "engines": { + "node": ">=18" + } + }, + "node_modules/@esbuild/openbsd-x64": { + "version": "0.28.1", + "resolved": "https://registry.npmjs.org/@esbuild/openbsd-x64/-/openbsd-x64-0.28.1.tgz", + "integrity": "sha512-i/ZLIOafE0Z8cI/XANJAixoJL/uRAoS2xOA3rb0xN+KK0K177cMAsQYkzHtBrtMXAKuAc7HGgcWiZ/sRC1Nxgw==", + "cpu": [ + "x64" + ], + "dev": true, + "license": "MIT", + "optional": true, + "os": [ + "openbsd" + ], + "engines": { + "node": ">=18" + } + }, + "node_modules/@esbuild/openharmony-arm64": { + "version": "0.28.1", + "resolved": "https://registry.npmjs.org/@esbuild/openharmony-arm64/-/openharmony-arm64-0.28.1.tgz", + "integrity": "sha512-ge+Z7EXFNt2BO1oAMsVpiQ8EwndV9i1xXerAeTIK7AtPs3bKFXQM7nlRxDSIUIMeueR1CNXxqztLzdNeReKBJg==", + "cpu": [ + "arm64" + ], + "dev": true, + "license": "MIT", + "optional": true, + "os": [ + "openharmony" + ], + "engines": { + "node": ">=18" + } + }, + "node_modules/@esbuild/sunos-x64": { + "version": "0.28.1", + "resolved": "https://registry.npmjs.org/@esbuild/sunos-x64/-/sunos-x64-0.28.1.tgz", + "integrity": "sha512-BEjgtECkL3vY+SaSQ6nzVfiALUeFxpawyp8Jmf5PtYhf1Ug40N1h/hxlhts+f1FvSvarEigdxS3BlSMI2PJLcQ==", + "cpu": [ + "x64" + ], + "dev": true, + "license": "MIT", + "optional": true, + "os": [ + "sunos" + ], + "engines": { + "node": ">=18" + } + }, + "node_modules/@esbuild/win32-arm64": { + "version": "0.28.1", + "resolved": "https://registry.npmjs.org/@esbuild/win32-arm64/-/win32-arm64-0.28.1.tgz", + "integrity": "sha512-lCv9eK/H6ZJWbE7bh2nw54CZ9M2nupBxJcTsdk/QQnWkdSjKGuxmmH8/GWrlT1eMmZfn4dGcCjRte397WqfQXA==", + "cpu": [ + "arm64" + ], + "dev": true, + "license": "MIT", + "optional": true, + "os": [ + "win32" + ], + "engines": { + "node": ">=18" + } + }, + "node_modules/@esbuild/win32-ia32": { + "version": "0.28.1", + "resolved": "https://registry.npmjs.org/@esbuild/win32-ia32/-/win32-ia32-0.28.1.tgz", + "integrity": "sha512-zvb/mB2bSCoJOpoCBgYKKpX6YM6mJBlBUVUtVj41DlZJVEB6/0CKlRYxP5wWl1C1ILiCoAU5wZZ4q1P3qeS6Eg==", + "cpu": [ + "ia32" + ], + "dev": true, + "license": "MIT", + "optional": true, + "os": [ + "win32" + ], + "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", + "integrity": "sha512-bm4Mowrv+GXMlpWX++EcXw/iLyd1o3+bJkC2DkWXYVvgZCqD/bSj9ctZeAMC3cIxgjRVR2Dufaiu4YPxr5gW1A==", + "cpu": [ + "x64" + ], + "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", + "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" + } + } +} diff --git a/package.json b/package.json new file mode 100644 index 0000000..31fefbc --- /dev/null +++ b/package.json @@ -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" + } +} diff --git a/src/index.ts b/src/index.ts new file mode 100644 index 0000000..eddac4d --- /dev/null +++ b/src/index.ts @@ -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); diff --git a/src/stopwatch.test.ts b/src/stopwatch.test.ts new file mode 100644 index 0000000..ee7d9bd --- /dev/null +++ b/src/stopwatch.test.ts @@ -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); + }); +}); diff --git a/src/stopwatch.ts b/src/stopwatch.ts new file mode 100644 index 0000000..901ac33 --- /dev/null +++ b/src/stopwatch.ts @@ -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}`; +} diff --git a/tsconfig.json b/tsconfig.json new file mode 100644 index 0000000..6896f77 --- /dev/null +++ b/tsconfig.json @@ -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"] +}