fix: handle dotenv comments

Author: antongolub

src/util.ts

@@ -365,23 +365,36 @@ export const parseDotenv = (content: string): NodeJS.ProcessEnv => {
   let k = ''
   let c = ''
   let q = ''
+  let i = false
   const cap = () => { if (c && k) {
     if (!r.test(k)) throw new Error(`Invalid identifier: ${k}`)
     e[k] = c; c = ''; k = ''
   }}
 
   for (const s of content) {
-    if (s === ' ' && !q) {
-      if (!k && c === 'export') c = ''
+    if (i) {
+      if (s === '\n') i = false
       continue
     }
-    if (s === '=' && !q) {
-      if (!k) { k = c; c = ''; continue }
-    }
-    if (s === '\n' && !q) {
-      cap()
-      continue
+    if (!q) {
+      if (s === '#') {
+        i = true
+        continue
+      }
+      if (s === ' ') {
+        if (!k && c === 'export') c = ''
+        continue
+      }
+      if (s === '=') {
+        if (!k) { k = c; c = ''; continue }
+      }
+      if (s === '\n') {
+        i = false
+        cap()
+        continue
+      }
     }
+
     if (s === '"' || s === "'") {
       if (q === s) {
         q = ''

test/util.test.js

@@ -141,24 +141,27 @@ describe('util', () => {
     assert.equal(toCamelCase('kebab-input-str'), 'kebabInputStr')
   })
 
-  test('parseDotenv()', () => {
+  test.only('parseDotenv()', () => {
     const multiline = `SIMPLE=xyz123
-NON_INTERPOLATED='raw text without variable interpolation'
+# comment ###
+NON_INTERPOLATED='raw text without variable interpolation' 
 MULTILINE = """
-long text here,
+long text here, # not-comment
 e.g. a private SSH key
 """
 ENV=v1\nENV2=v2\n\n\n  ENV3  =    v3   \n   export ENV4=v4
+ENV5=v5 # comment
 `
 
     assert.deepEqual(parseDotenv(multiline), {
       SIMPLE: 'xyz123',
       NON_INTERPOLATED: 'raw text without variable interpolation',
-      MULTILINE: '\nlong text here,\ne.g. a private SSH key\n',
+      MULTILINE: '\nlong text here, # not-comment\ne.g. a private SSH key\n',
       ENV: 'v1',
       ENV2: 'v2',
       ENV3: 'v3',
       ENV4: 'v4',
+      ENV5: 'v5',
     })
 
     assert.deepEqual(