Support 'exports' field in package.json of published modules. #1389

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Support 'exports' field in package.json of published modules.#1389

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feature requestscope: transpileAny transpilation not directly related to code transformsAny transpilation not directly related to code transforms

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pilaoda

opened on Feb 2, 2023

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There are two problems about this field.

First:

TypeScriptToLua/src/transpilation/resolve.ts

Lines 13 to 19 in 93ff05d

	const resolver = resolve.ResolverFactory.createResolver({
	extensions: [".lua"],
	enforceExtension: true, // Resolved file must be a lua file
	fileSystem: { ...new resolve.CachedInputFileSystem(fs) },
	useSyncFileSystemCalls: true,
	symlinks: false, // Do not resolve symlinks to their original paths (that breaks node_modules detection)
	});

The resolver should add conditions to support export conditions in a published module's package.json like:

{
    "exports": {
        "./client": {
            "require": "./dist/client/index.lua",
            "types": "./src/index.ts"
        }
    },
}

I guess we should add ["node", "require"], and maybe "tstl" ?
Related doc:

• https://nodejs.org/api/packages.html#conditional-exports
• https://devblogs.microsoft.com/typescript/announcing-typescript-4-7/#esm-nodejs

Second:

TypeScriptToLua/src/transpilation/utils.ts

Line 54 in 93ff05d

resolved = resolve.sync(query, { basedir, extensions: [".js", ".ts", ".tsx"] });

resolvePlugin use node-resolve rather than enhanced-resolve, which not support this "exports" field.

Activity

1. Perryvw

   added

   feature request

   scope: transpileAny transpilation not directly related to code transformsAny transpilation not directly related to code transforms

   on Feb 2, 2023

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feature requestscope: transpileAny transpilation not directly related to code transformsAny transpilation not directly related to code transforms

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