allow importing of json files via import assert

Author: tlhunter

hook.mjs

@@ -90,6 +90,11 @@ export async function resolve (specifier, context, parentResolve) {
     return url
   }
 
+  if (context.importAssertions && context.importAssertions.type === 'json') {
+    return url
+  }
+
+
   specifiers.set(url.url, specifier)
 
   return {

test/fixtures/json.mjs

@@ -0,0 +1,9 @@
+// Unless explicitly stated otherwise all files in this repository are licensed under the Apache 2.0 License.
+//
+// This product includes software developed at Datadog (https://www.datadoghq.com/). Copyright 2021 Datadog, Inc.
+
+import coolFile from './something.json' assert { type: 'json' };
+
+export default {
+  data: coolFile.data
+};

test/fixtures/something.json

@@ -0,0 +1,3 @@
+{
+  "data": "dog"
+}

test/hook/v18-static-import-assert.mjs

@@ -0,0 +1,15 @@
+// Unless explicitly stated otherwise all files in this repository are licensed under the Apache 2.0 License.
+//
+// This product includes software developed at Datadog (https://www.datadoghq.com/). Copyright 2021 Datadog, Inc.
+
+import Hook from '../../index.js'
+import jsonMjs from '../fixtures/json.mjs'
+import { strictEqual } from 'assert'
+
+Hook((exports, name) => {
+  if (name.match(/json\.mjs/)) {
+    exports.default.data += '-dawg'
+  }
+})
+
+strictEqual(jsonMjs.data, 'dog-dawg')

test/runtest

@@ -15,6 +15,18 @@ const args = [
   '--unhandled-rejections=strict',
   ...process.argv.slice(2)
 ]
+
+const [processMajor] = process.versions.node.split('.').map(Number)
+
+const match = filename.match(/v([0-9]+)/)
+
+const versionRequirement = match ? match[1] : 0;
+
+if (processMajor < versionRequirement) {
+  console.log(`skipping ${filename} as this is Node.js v${processMajor} and test wants v${versionRequirement}`);
+  process.exit(0);
+}
+
 if (!filename.includes('disabled')) {
   const isTypescript = path.extname(filename).slice(-2) === 'ts'
   const loaderPath = isTypescript