feat: allow tsconfig comments (#22)

Author: spence-s

package-lock.json

@@ -59,7 +59,8 @@
   "dependencies": {
     "@knighted/specifier": "^1.0.0-rc.4",
     "glob": "^10.3.3",
-    "read-pkg-up": "^10.0.0"
+    "read-pkg-up": "^10.0.0",
+    "strip-json-comments": "^5.0.1"
   },
   "prettier": {
     "arrowParens": "avoid",

package.json

@@ -2,6 +2,7 @@ import { cwd } from 'node:process'
 import { parseArgs } from 'node:util'
 import { resolve, join, dirname } from 'node:path'
 import { stat, readFile } from 'node:fs/promises'
+import stripJsonComments from 'strip-json-comments'
 
 import { readPackageUp } from 'read-pkg-up'
 
@@ -124,7 +125,7 @@ const init = async args => {
       let tsconfig = null
 
       try {
-        tsconfig = JSON.parse((await readFile(configPath)).toString())
+        tsconfig = JSON.parse(stripJsonComments((await readFile(configPath)).toString()))
       } catch (err) {
         logError(`The config file found at ${configPath} is not parsable as JSON.`)
 

src/init.js

@@ -1,4 +1,5 @@
 {
+  // test comment
   "compilerOptions": {
     "target": "ESNext",
     "module": "NodeNext",