createIncrementalProgram is not emitting incrementally

[AaroncoolPx]

Bug Report

🔎 Search Terms

createIncrementalProgram

🕗 Version

Typescript 4.5.4

💻 Code

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();

🙁 Actual behavior

createIncrementalProgram is not emitting incrementally. Files are recompiled even though the source files are not changed. It is behaving same as createProgram.

🙂 Expected behavior

Should not recompile when no source files have been changed.

[DanielRosenwasser]

This is possibly related to #47309, and possible mitigations are discussed in #46677.

[sheetalkamat]

I am not sure what issue you are seeing. Can you share exact repro code, (Apart from your code, the source on which you are running this.) i have run this on simple repro and it works as expected.