fix: update import extensions in compiled source

Author: coderbyheart

.npm/compile.ts

@@ -0,0 +1,46 @@
+/*
+ * Compile source for NPM
+ */
+
+import swc from '@swc/core'
+import { mkdirSync, rmSync, writeFileSync } from 'node:fs'
+import { glob } from 'node:fs/promises'
+import path, { dirname } from 'node:path'
+import { fileURLToPath } from 'node:url'
+import tsconfig from './tsconfig.npm.json' with { type: 'json' }
+import { updateImports } from './updateImports.ts'
+
+const __dirname = dirname(fileURLToPath(import.meta.url))
+
+const outDir = path.join(__dirname, '..', 'dist')
+
+rmSync(outDir, { recursive: true, force: true })
+
+for await (const file of glob(
+	`./.npm/{${tsconfig.include.join(',')}}/**/*.ts`,
+)) {
+	if (file.endsWith('.spec.ts')) continue
+	let compiled = (
+		await swc.transformFile(file, {
+			jsc: {
+				parser: {
+					syntax: 'typescript',
+				},
+				target: 'es2024',
+			},
+			module: {
+				type: 'es6',
+			},
+		})
+	).code
+
+	compiled = updateImports(compiled)
+
+	const targetFile = path.join(outDir, file.replace(/\.ts$/, '.js'))
+
+	mkdirSync(dirname(targetFile), { recursive: true })
+
+	writeFileSync(targetFile, compiled, 'utf8')
+
+	console.log(file)
+}

.npm/tsconfig.npm.json

@@ -0,0 +1,16 @@
+{
+  "extends": "../tsconfig.json",
+  "compilerOptions": {
+    "emitDeclarationOnly": true,
+    "declaration": true,
+    "noEmit": false
+  },
+  "include": [
+    "../generator",
+    "../lwm2m",
+    "../markdown",
+    "../models",
+    "../senml",
+    "../api"
+  ]
+}

.npm/updateImports.spec.ts

@@ -0,0 +1,11 @@
+import assert from 'node:assert'
+import { describe, it } from 'node:test'
+import { updateImports } from './updateImports.ts'
+
+void describe('updateImports', () => {
+	void it('replaces .ts with .js in relative imports', () => {
+		const input = `import { foo } from './bar.ts';`
+		const expected = `import { foo } from './bar.js';`
+		assert.equal(updateImports(input), expected)
+	})
+})

.npm/updateImports.ts

@@ -0,0 +1,2 @@
+export const updateImports = (source: string): string =>
+	source.replace(/from ['"](.+?)\.ts['"]/g, "from '$1.js'")

compile.sh

@@ -31,8 +31,9 @@
   },
   "scripts": {
     "prepare": "husky && case \"$npm_command\" in install|ci) check-node-version --package ;; esac",
-    "test": "npx globstar -- node --experimental-transform-types --no-warnings --test --test-reporter spec \"!(node_modules)/**/*.spec.ts\"",
-    "prepublishOnly": "./compile.sh"
+    "test": "node --no-warnings --experimental-transform-types --test \"!(node_modules)/**/*.spec.ts\"",
+    "test:watch": "node --no-warnings --experimental-transform-types --test --watch \"!(node_modules)/**/*.spec.ts\"",
+    "prepublishOnly": "node --experimental-strip-types ./.npm/compile.ts"
   },
   "devDependencies": {
     "@bifravst/eslint-config-typescript": "7.0.34",

package.json

@@ -18,6 +18,7 @@
     "verbatimModuleSyntax": true,
     "skipLibCheck": true,
     "allowImportingTsExtensions": true,
+    "rootDir": ".",
     "paths": {
       "@hello.nrfcloud.com/proto-map/generator": ["./generator/index.d.ts"],
       "@hello.nrfcloud.com/proto-map/lwm2m": ["./lwm2m/index.d.ts"],
@@ -26,5 +27,6 @@
       "@hello.nrfcloud.com/proto-map/models": ["./models/index.d.ts"],
       "@hello.nrfcloud.com/proto-map/senml": ["./senml/index.d.ts"]
     }
-  }
+  },
+  "include": ["./**/*.ts", "./.npm/*.ts"]
 }