test constructor interface

Author: mashpie

.taprc

@@ -1,7 +1,6 @@
 {
   "timeout": 10,
   "reporter": "spec",
-  "check-coverage": false,
-  "no-coverage": true,
+  
   "test-regex": "\\w+\\.test\\.js$"
 }

index.constructor.test.js

@@ -0,0 +1,70 @@
+import tap from 'tap'
+import { fileURLToPath } from 'url'
+import { dirname as dirnamePath } from 'path'
+import CommonESM from './index.js'
+
+const {
+  __dirname,
+  __filename,
+  __isMain,
+  dirname,
+  filename,
+  isMain,
+  join,
+  requireJson
+} = new CommonESM(import.meta.url)
+
+const ___dirname = dirnamePath(fileURLToPath(import.meta.url))
+const ___filename = fileURLToPath(import.meta.url)
+
+tap.test('__dirname', (t) => {
+  t.equal(
+    __dirname,
+    ___dirname,
+    '__dirname should return the current directory'
+  )
+  t.end()
+})
+
+tap.test('__filename', (t) => {
+  t.equal(__filename, ___filename, '__filename should return the current file')
+  t.end()
+})
+
+tap.test('__isMain', (t) => {
+  t.equal(__isMain, true, '__isMain should return true')
+  t.end()
+})
+
+tap.test('dirname()', (t) => {
+  t.equal(dirname(), ___dirname, 'dirname should return the current directory')
+  t.end()
+})
+
+tap.test('filename()', (t) => {
+  t.equal(filename(), ___filename, 'filename should return the current file')
+  t.end()
+})
+
+tap.test('isMain()', (t) => {
+  t.equal(isMain(), true, 'isMain should return true')
+  t.end()
+})
+
+tap.test('join()', (t) => {
+  t.equal(
+    join('a', 'b', 'c'),
+    `${___dirname}/a/b/c`,
+    'join should join the given paths'
+  )
+  t.end()
+})
+
+tap.test('requireJson()', (t) => {
+  t.equal(
+    requireJson('./package.json').name,
+    '@uscreen.de/common-esm',
+    'requireJson should require a JSON file'
+  )
+  t.end()
+})

index.test.js index.function.test.js

@@ -3,11 +3,6 @@ import { fileURLToPath } from 'url'
 import { dirname as dirnamePath } from 'path'
 import { dirname, filename, join, requireJson, isMain } from './index.js'
 
-tap.test('Test Setup', (t) => {
-  t.equal(true, true, 'Tests and assertions should work')
-  t.end()
-})
-
 const __dirname = dirnamePath(fileURLToPath(import.meta.url))
 const __filename = fileURLToPath(import.meta.url)
 

index.js

@@ -1,5 +1,5 @@
 import { readFileSync } from 'fs'
-import desm, { dirname, filename, join } from 'desm'
+import { dirname, filename, join } from 'desm'
 
 /**
  * like const { name } = require('./package.json')
@@ -12,5 +12,27 @@ const requireJson = (metaUrl, file) =>
  */
 const isMain = (metaUrl) => filename(metaUrl) === process.argv[1]
 
+/**
+ * pure function
+ * import CommonESM = from '@uscreen.de/common-esm'
+ * const { __dirname, __filename } = new CommonESM(import.meta.url)
+ */
+function CommonESM(metaUrl) {
+  const __dirname = dirname(metaUrl)
+  const __filename = filename(metaUrl)
+  const __isMain = isMain(metaUrl)
+
+  return {
+    __dirname,
+    __filename,
+    __isMain,
+    dirname: () => dirname(metaUrl),
+    filename: () => filename(metaUrl),
+    isMain: () => isMain(metaUrl),
+    join: (...args) => join(metaUrl, ...args),
+    requireJson: (file) => requireJson(metaUrl, file)
+  }
+}
+
 export { dirname, filename, join, requireJson, isMain }
-export default desm
+export default CommonESM