tsconfig.json not being read by tsc

[OliverJAsh]

Given:

// tsconfig.json
{
    "compilerOptions": {
        "noImplicitAny": true,
        "module": "commonjs"
    }
}

// main.ts
/// <reference path="./node_modules/immutable/dist/immutable.d.ts" />
import * as Im from 'immutable';

// package.json
{
  "private": true,
  "dependencies": {
    "immutable": "^3.7.5",
    "typescript": "^1.6.2"
  }
}

My tsconfig.json doesn't appear to be read by tsc:

$ ./node_modules/.bin/tsc main.ts
main.ts(1,1): error TS1148: Cannot compile modules unless the '--module' flag is provided.

Am I missing something?

[jkillian]

If you specify input files, tsconfig.json is ignored. (I agree this is slightly surprising behavior.)
Check out this page for more info on tsconfig.json.

[OliverJAsh]

Okay, that is surprising. Thanks

[mhegazy]

The other option is to use --project <path to tsconfig.json directory> instead.

[martellaj]

Ignore this comment. Leaving in for conversation's sake.

For anyone reading this now, it seems as if the --project option is no longer supported.

[mhegazy]

For anyone reading this now, it seems as if the --project option is no longer supported.

@martellaj that is not correct. --project/--p is still a supported feature. as a matter of fact, starting with TS 1.8, --project now supports a full file path. see #2869

[martellaj]

@mhegazy, my bad! My PC got into a weird state where I had a second version of TypeScript installed and that's where tsc was mapped to. I'll edit my previous comment.