TypeScript project with references

I arrived here trying to solve a "has not been built from source file" error. Turned out a tsc watch process hadn't properly exited, so I had two instances fighting over the files. Just in case anyone else runs into the same issue 😀

I solved it little after my last activity here, but i wasn't 100% sure if that happened due to the following changes. I am posting it here anyway, as there are still new views and votes, so it may be valuable for others:

That was the change:

In ./shared/tsconfig.json contents

I added

{
   "outDir": "./lib/",
   ...
   "rootDir": "./src",
}

to give:

{
    "compilerOptions": {
        "allowSyntheticDefaultImports": true,
        "composite": true,
        "declaration": true,
        "module": "amd",
        "noEmitOnError": true,
        "noImplicitAny": false,
        "outDir": "./lib/", <-------------
        "preserveConstEnums": true,
        "removeComments": true,
        "rootDir": "./src", <-------------
        "sourceMap": true,
        "target": "es2015",
        "watch": true
    },
    "include": [
        "./src/**/*.ts",
    ]
}

Found this when searching for "typescript references has not been built from source file". My mistake was that I was running tsc -p tsconfig.json when I should've been using the --build flag: tsc --build tsconfig.json. If you run with -p TypeScript will not build the referenced projects. Only if you run with --build.