⚙️ Lesson 19 of 40 Workflow Intermediate

Tasks, Build Systems & npm Scripts

VS Code's task system lets you run build commands, test runners, and scripts directly from the editor — with output streamed to a dedicated terminal and problem matchers that link errors back to source files.

48% complete

1What Are Tasks?

Tasks are configured commands that VS Code can run on your behalf. They can be triggered by a shortcut (Ctrl+Shift+B for the default build task), from the Command Palette (Run Task), or automatically on folder open.

2Auto-Detecting npm Scripts

VS Code reads your package.json and auto-detects all scripts as runnable tasks. Open Terminal › Run Task to see the full list. Right-click a script in the NPM Scripts sidebar to set one as the default build task.

3Creating tasks.json

.vscode/tasks.json
{
  "version": "2.0.0",
  "tasks": [{
    "label": "Build TypeScript",
    "type": "shell",
    "command": "tsc",
    "group": { "kind": "build", "isDefault": true },
    "problemMatcher": "$tsc"
  }]
}

4Problem Matchers

Problem matchers parse task output and turn errors/warnings into clickable items in the Problems panel. VS Code ships with matchers for $tsc, $eslint, $go, $gcc, and many more.

5Compound Tasks & Depends On

Chain tasks together with dependsOn — for example, run Clean then Build then Test as a single CI task. Use "dependsOrder": "sequence" to run them one after another.


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