Allow to replace/update the bundled TS language service

[ulrichb]

This is a follow-up of #177.

Same issue, but now with the Monaco Editor-bundled version 3.3 (without e.g. readonly tuples feature) vs. current version 3.4.

Is there a possibility to use the TypeScript language service (typescriptServices.js) from the typescript npm package instead of the bundled one (.../monaco-editor/esm/vs/language/typescript/lib/typescriptServices.js) without forking Monaco Editor?

[ulrichb]

@alexandrudima Is there any possibility? I'm really struggling with the semantic model errors when using TS 3.4 declarations containing readonly tuples and arrays...

... if there is no (easy) possiblity ... when can expect a Monaco Editor release containing TS 3.4 (or 3.5)?

[alexdima]

It is possible to fork monaco-typescript and publish it to npm as monaco-typescript-fork. Then, it is possible to fork this project and tweak the monaco-typescript plugin section here --

monaco-editor/metadata.js

Lines 15 to 26 in d8296a4

	{
	name: 'monaco-typescript',
	contrib: 'vs/language/typescript/monaco.contribution',
	modulePrefix: 'vs/language/typescript',
	thirdPartyNotices: 'node_modules/monaco-typescript/ThirdPartyNotices.txt',
	paths: {
	src: '/monaco-typescript/release/dev',
	'npm/dev': 'node_modules/monaco-typescript/release/dev',
	'npm/min': 'node_modules/monaco-typescript/release/min',
	esm: 'node_modules/monaco-typescript/release/esm',
	}
	},

You can then execute gulp release and you will get a monaco editor built with your custom monaco-typescript.