When you downloaded and unpacked the workspace, you will see a file called tsconfig.json in root and presence folders, this file is used for configuring the TypeScript compiler. It is already configured for you, so don't worry about that.
We just want to describe some settings that you should know.
In the root configuration file you will see something like this.
{
"compilerOptions": {
"module": "CommonJS",
"target": "ES2020",
"removeComments": true,
"noEmitOnError": true,
"noFallthroughCasesInSwitch": true,
"noUnusedLocals": true,
"noUnusedParameters": true,
"inlineSourceMap": true,
"typeRoots": ["@types"],
"esModuleInterop": true
}
}
| Property | Description |
|---|---|
| compilerOptions | Used for configuring the compiler, most of the properties are located here. |
| module | You can read more about that here. |
| target | Defines the JavaScript version you are compiling. |
| removeComments | Removing comments from compiled files. |
| noEmitOnError | Do not emit outputs if any errors were reported. |
| noFallthroughCasesInSwitch | Report errors for fallthrough cases in switch statement. |
| noUnusedLocals | Report errors on unused locals. |
| noUnusedParameters | Report errors on unused parameters. |
| inlineSourceMap | Adds sourcemapping |
| typeRoots | You can read more about that here. |
| esModuleInterop | Emit __importStar and __importDefault helpers for runtime babel ecosystem compatibility and enable --allowSyntheticDefaultImports for typesystem compatibility. |
{
"extends": "../../../tsconfig.json",
"compilerOptions": {
"outDir": "./dist/"
}
}
| Property | Description |
|---|---|
| extends | Used for extending the base tsconfig file for various tasks. |
| compilerOptions | See Root Configuration for more info. |
| outDir | Defines the output directory for compiled files. |