Add Generate An Initial tsconfig File as a TypeScript TIL

typescript/generate-an-initial-tsconfig-file.md

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+# Generate An Initial tsconfig File
+
+A new `tsconfig.json` file can be generated using the `tsc` CLI which is part
+of the `typescript` node package.
+
+You'll first want to add `typescript` to your project:
+
+```bash
+$ npm install typescript --save-dev
+```
+
+Since it is a local project dependency, you'll want to add `tsc` as a script in
+your `package.json`.
+
+```json
+"scripts": {
+  "tsc": "tsc"
+}
+```
+
+Now you can use `npm` to run `tsc --init` like so:
+
+```bash
+$ npm run tsc -- --init
+```
+
+Notice the delimiting `--` which tells `npm` to pass the remaining arguments to
+the command being invoked. This makes sure `--init` gets passed as an argument
+to `tsc`.
+
+This will generate a huge, mostly commented-out `tsconfig.json` file full of
+annotations that looks something like this:
+
+```json
+{
+  "compilerOptions": {
+    /* Visit https://aka.ms/tsconfig to read more about this file */
+
+    /* Projects */
+    // "incremental": true,                              /* Save .tsbuildinfo files to allow for incremental compilation of projects. */
+    /* ... */
+
+    /* Language and Environment */
+    "target": "es2016",                                  /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */
+    /* ... */
+  }
+}
+```