rollup-plugin-typescript2

Rollup plugin for typescript with compiler errors.

This is a rewrite of original rollup-plugin-typescript, starting and borrowing from this fork.

This version is somewhat slower than original, but it will print out typescript syntactic and semantic diagnostic messages (the main reason for using typescript after all).

Usage

// rollup.config.js
import typescript from 'rollup-plugin-typescript2';

export default {
    entry: './main.ts',

    plugins: [
        typescript()
    ]
}

The plugin inherits all compiler options and file lists from your tsconfig.json file. If your tsconfig has another name or another relative path from the root directory, you can pass in a custom path:

// ...
plugins: [
    typescript({
        tsconfig: "other_dir/tsconfig.json"
    })
]

This also allows for passing in different tsconfig files depending on your build target.

The following compiler options are forced though:

• module: es2015
• noEmitHelpers: true
• importHelpers: true
• noResolve: false

You will need to set "moduleResolution": "node" in tsconfig.json if typescript complains about missing tslib. See #12 and #14.

Plugin takes following options:

• tsconfig: "tsconfig.json"

  Override this if your tsconfig has another name or relative location from the project directory.

• check: true

  Set to false to avoid doing any diagnostic checks on the code.

• verbosity: 1

  • 0 -- Error
  • 1 -- Warning
  • 2 -- Info
  • 3 -- Debug

• clean: false

  Set to true for clean build (wipes out cache on every build).

• cacheRoot: ".rts2_cache"

  Path to cache.

• include: [ "*.ts+(|x)", "**/*.ts+(|x)" ]

  By default passes all .ts files through typescript compiler.

• exclude: [ "*.d.ts", "**/*.d.ts" ]

  But excludes type definitions.

• abortOnError: true

  Bail out on first syntactic or semantic error. In some cases setting this to false will result in exception in rollup itself (for example for unresolvable imports).

• rollupCommonJSResolveHack: false

  On windows typescript resolver favors POSIX path, while commonjs plugin (and maybe others?) uses native path as module id. This can result in namedExports being ignored if rollup happened to use typescript's resolution. Set to true to pass resolved module path through resolve() to match up with rollup-plugin-commonjs.

Declarations

This plugin respects declaration: true in your tsconfig.json file. When set, it will emit *.d.ts files for your bundle. The resulting file(s) can then be used with the types property in your package.json file as described here.

Watch mode

The way typescript handles type-only imports and ambient types effectively hides them from rollup watch, because import statements are not generated and changing them doesn't trigger a rebuild.

Otherwise the plugin should work in watch mode. Make sure to run a normal build after watch session to catch any type errors.

Version

This plugin currently requires TypeScript 2.0+.

Rollup version

Tested on rollup 0.41.4.

Reporting bugs

Report any bugs on github: https://github.com/ezolenko/rollup-plugin-typescript2/issues.

Attach your tsconfig.json, package.json (for versions of dependencies), rollup script and anything else that could influence module resolution, ambient types and typescript compilation.

Check if problem is reproducible after running npm prune to clear any rogue types from npm_modules (by default typescript grabs all ambient types).

Check if you get the same problem with clean option set to true (might indicate a bug in the cache).

If makes sense, check if running tsc directly produces similar results.

Attach plugin output with verbosity option set to 3 (this will list all files being transpiled and their imports).