When I execute tsc --noEmit --incremental, it takes approximately 17 seconds to complete. To improve the speed, tsc provides watch mode which now only takes around 2 seconds.
This is my current script:
// type checking
tsc --noEmit --incremental
// build
node ./build-with-esbuild.js
The build script itself has its own watcher. How can I incorporate tsc --watch with my build script?
After successfully implementing stdio pipe and detecting tsc, I have completed my solution. I made the decision to remove the watcher from the build process and now solely depend on the tsc watcher.
import { execSync, spawn } from 'child_process';
const tschecking = spawn(
`npx tsc --watch --incremental --tsBuildInfoFile ${DIR}/tsconfig.tsbuildinfo`,
[],
{
cwd: SERVICE_DIR,
stdio: 'pipe',
shell: true,
}
);
/**
* Execute build once type checking is done
*/
tschecking.stdout.on('data', (data: any): any => {
const output = data.toString();
console.log(output);
if (output.includes('Watching for file changes')) {
build();
}
});
If you're looking for an alternative approach, consider leveraging a tool such as concurrently to simultaneously execute both the tsc command and the build script:
concurrently "tsc --watch --incremental" "node build.js"
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