createIncrementalProgram: trigger recompilation with new files

[ivogabe]

Search Terms

createIncrementalProgram API changes

Suggestion

I'm currently trying to use createIncrementalProgram in gulp-typescript to make use of the new incremental compilation functionalities. I have not yet found how to signal the compiler that some files have changed. The version field of all the files is still at the old version, whereas the Host does have files with the new version. So how can I signal the BuilderProgram that some file has changed?

Use Cases

I'm implementing this in gulp-typescript, the gulp plugin for TypeScript. See ivogabe/gulp-typescript#635

[andrewbranch]

@sheetalkamat do you know of any examples that @ivogabe can look at?

[sheetalkamat]

createIncrementalProgram is similar to createProgram but reads the old program from the .tsbuildinfo. For your scenario you wanto use createWatchProgram which handles changes in files.

[ivogabe]

Thanks for the info! I'll take a look, it'll probably require some more changes than I hoped. I'll let you know if I can get it working. Do you mind keeping this open in case we have further questions?

[andrewbranch]

I think the bot will close it only after some period of inactivity, but if it gets closed and you come back with more questions, feel free to comment and I’ll reopen.

[typescript-bot]

This issue has been marked as 'Question' and has seen no recent activity. It has been automatically closed for house-keeping purposes. If you're still waiting on a response, questions are usually better suited to stackoverflow.

[AaroncoolPx]

I am facing a problem.

createIncrementalProgram emits and update output files, even though source remain unchanged.

import ts = require("typescript");

var options = {
    incremental: true,
    allowJs: true,
    sourceMap: true,
    tsBuildInfoFile: "buildInfoTestOutput",
};
let program = ts.createIncrementalProgram ({
    rootNames: ["./test1.ts"],
    options: options
});
let emitResult = program.emit();

typescript@4.5.4