config-file-ts

config-file-ts

Just use TypeScript for configuration files.
####

TypeScript is more syntactically flexible than JSON. Comments are allowed. Keys needn't be quoted.
Arrays can have trailing commas.

TypeScript allows a little programming in config files. Share variables, use utility functions, etc.

TypeScript types provide free error checking, and free IDE support for getting config files right.

$3

Parsing TypeScript config files is plenty quick. config-file-ts caches the TypeScript output.

Assuming TypeScript is in your environment, config-file-ts adds about 5kb to your program, or 1.5kb minified.

$3

``bash
$ yarn add config-file-ts
`

In the config file, export default. `my.config.ts`:
`ts
export default {
entry: "my stuff" // comments are welcome now
};
``


Feel free to add types and scripting. `my.config.ts`:
`ts
import os from "os"; // use installed libraries in the config
import { MyConfig } from "./MyProgram";

export default {
entry: ${os.userInfo().username}'s stuff // use scripting in the config file
} as MyConfig; // typecheck the config file
``

Read the config file in your program. `MyProgram.ts`:
`ts
export interface MyConfig {
entry?: string;
}

const config = loadTsConfig("my.config.ts");
``