Typescript: Create tsbuild public API and use incremental build in tsbuild --watch mode

[sheetalkamat]

• [ ] Use incremental build in tsbuild --watch mode
• [ ] Actual host apis for build with and without watch mapping to corresponding program
• [ ] Move caching login #28629 to creation of host for tsbuild (without watch mode instead and have another function that createCompilerHostWithCaching instead.)
• [ ] From #29161 We do not cache source files yet and that's something to be looked at later.
  Two things can be done:
  
  
  
  • To keep source files for program thats being updated in last few cycles
  
  
  • To release the source files if size exceeds or program is not used for few build cycles
  
  
  • CompilerHost and Likes api to be better once this is shaped up
  
  

Search Terms

Suggestion

Use Cases

Examples

Checklist

My suggestion meets these guidelines:

• [ ] This wouldn't be a breaking change in existing TypeScript/JavaScript code
• [ ] This wouldn't change the runtime behavior of existing JavaScript code
• [ ] This could be implemented without emitting different JS based on the types of the expressions
• [ ] This isn't a runtime feature (e.g. library functionality, non-ECMAScript syntax with JavaScript output, etc.)
• [ ] This feature would agree with the rest of TypeScript's Design Goals.

[ajafff]

• [x] create a new CompilerHost for each project so it knows the correct compilerOptions for that project (from discussion in https://github.com/Microsoft/TypeScript/pull/27560#discussion_r224996878)

[maclockard]

Just curious, are the any updates here? Clicking through some of the links in the initial issue it looks like this might be close?

[kirillonufreinko]

Is this issue resolved or planned to be resolved in certain release?

[sheetalkamat]

31432 is up for this

[sheetalkamat]

Closed by #31432