fix: show type on invalid semver error (#559)

Add linting rules to prevent regression in using node internals.

Author: tjenkinson

.eslintrc.local.js

@@ -0,0 +1,18 @@
+'use strict'
+
+module.exports = {
+  overrides: [
+    {
+      files: ['bin/**', 'classes/**', 'functions/**', 'internal/**', 'ranges/**'],
+      rules: {
+        'import/no-extraneous-dependencies': [
+          'error',
+          {
+            devDependencies: false,
+          },
+        ],
+        'import/no-nodejs-modules': ['error'],
+      },
+    },
+  ],
+}

classes/semver.js

@@ -16,7 +16,7 @@ class SemVer {
         version = version.version
       }
     } else if (typeof version !== 'string') {
-      throw new TypeError(`Invalid Version: ${require('util').inspect(version)}`)
+      throw new TypeError(`Invalid version. Must be a string. Got type "${typeof version}".`)
     }
 
     if (version.length > MAX_LENGTH) {

test/classes/semver.js

@@ -62,15 +62,19 @@ test('really big numeric prerelease value', (t) => {
 })
 
 test('invalid version numbers', (t) => {
-  ['1.2.3.4',
-    'NOT VALID',
-    1.2,
-    null,
-    'Infinity.NaN.Infinity',
-  ].forEach((v) => {
-    t.throws(() => {
-      new SemVer(v) // eslint-disable-line no-new
-    }, { name: 'TypeError', message: `Invalid Version: ${v}` })
+  ['1.2.3.4', 'NOT VALID', 1.2, null, 'Infinity.NaN.Infinity'].forEach((v) => {
+    t.throws(
+      () => {
+        new SemVer(v) // eslint-disable-line no-new
+      },
+      {
+        name: 'TypeError',
+        message:
+          typeof v === 'string'
+            ? `Invalid Version: ${v}`
+            : `Invalid version. Must be a string. Got type "${typeof v}".`,
+      }
+    )
   })
 
   t.end()
@@ -113,15 +117,19 @@ test('compare main vs pre', (t) => {
 })
 
 test('invalid version numbers', (t) => {
-  ['1.2.3.4',
-    'NOT VALID',
-    1.2,
-    null,
-    'Infinity.NaN.Infinity',
-  ].forEach((v) => {
-    t.throws(() => {
-      new SemVer(v) // eslint-disable-line no-new
-    }, { name: 'TypeError', message: `Invalid Version: ${v}` })
+  ['1.2.3.4', 'NOT VALID', 1.2, null, 'Infinity.NaN.Infinity'].forEach((v) => {
+    t.throws(
+      () => {
+        new SemVer(v) // eslint-disable-line no-new
+      },
+      {
+        name: 'TypeError',
+        message:
+          typeof v === 'string'
+            ? `Invalid Version: ${v}`
+            : `Invalid version. Must be a string. Got type "${typeof v}".`,
+      }
+    )
   })
 
   t.end()

test/functions/parse.js

@@ -20,7 +20,7 @@ t.test('throw errors if asked to', t => {
     parse([], null, true)
   }, {
     name: 'TypeError',
-    message: 'Invalid Version: []',
+    message: 'Invalid version. Must be a string. Got type "object".',
   })
   t.end()
 })

test/map.js

@@ -6,6 +6,7 @@ const ignore = [
   '.github',
   '.commitlintrc.js',
   '.eslintrc.js',
+  '.eslintrc.local.js',
   'node_modules',
   'coverage',
   'tap-snapshots',