perf: optimize buffer input processing

.github/workflows/ci.yaml

@@ -81,7 +81,7 @@ jobs:
     strategy:
       matrix:
         os: [ ubuntu-latest, windows-latest ]
-        node-version: [ 22 ]
+        node-version: [ 8, 22 ]
 
     runs-on: ${{ matrix.os }}
     steps:
@@ -95,14 +95,15 @@ jobs:
       - uses: actions/download-artifact@v4
         with:
           name: build
-      - name: Fetch deps
-        run: npm ci
+
       - name: Run all tests
         if: matrix.os == 'ubuntu-latest' && matrix.node-version == 22
-        run: npm run test
+        run: |
+          npm ci
+          npm run test
         timeout-minutes: 1
 
       - name: Run units
-        if: matrix.os != 'ubuntu-latest' && matrix.node-version != 22
-        run: npm run test:unit
+        if: matrix.os != 'ubuntu-latest' || matrix.node-version != 22
+        run: npm run test:smoke:cjs
         timeout-minutes: 1

package.json

@@ -32,6 +32,8 @@
     "test:unit": "vitest run --dir src/test/ts --coverage.enabled --coverage.include src/main/ts --coverage.reportsDirectory target/coverage --coverage.thresholds.100",
     "test:jsr": "jsr publish --dry-run",
     "test:audit": "npm audit",
+    "test:smoke:cjs": "node ./src/test/smoke/smoke.cjs",
+    "test:smoke:mjs": "node ./src/test/smoke/smoke.mjs",
     "publish:draft": "npm run build && npm publish --no-git-tag-version"
   },
   "publishConfig": {

src/main/ts/envapi.ts

@@ -1,11 +1,13 @@
 import fs from 'node:fs'
 import path from 'node:path'
+import { TextDecoder } from 'node:util'
 
 const DOTENV = '.env'
 const Q1 = '"' // double quote
 const Q2 = "'" // single quote
 const Q3 = '`' // backtick
 
+const decoder = new TextDecoder()
 export const parse = (content: string | Buffer): NodeJS.ProcessEnv => {
   const kr = /^[a-zA-Z_]+\w*$/
   const sr = /\s/
@@ -22,7 +24,7 @@ export const parse = (content: string | Buffer): NodeJS.ProcessEnv => {
     }
   }
 
-  for (const c of content.toString().replace(/\r\n?/mg, '\n')) {
+  for (const c of (typeof content === 'string' ? content : decoder.decode(content))) {
     if (i) {
       if (c === '\n') i = 0
       continue

src/test/smoke/smoke.cjs

@@ -0,0 +1,2 @@
+const envapi = require('../../../target/cjs/index.cjs')
+envapi.stringify(envapi.parse('foo=bar'))

src/test/smoke/smoke.mjs

@@ -0,0 +1,2 @@
+import envapi from '../../../target/esm/index.mjs'
+envapi.stringify(envapi.parse('foo=bar'))

src/test/ts/index.test.ts

@@ -29,7 +29,7 @@ MULTILINE = """
 long text here, # not-comment
 e.g. a private SSH key
 """
-ENV=v1\nENV2=v2\n\n\n\t\t  ENV3  =    'v"3'   \n   export ENV4="v\`4"
+ENV=v1\nENV2=v2\r\n\n\r\n\t\t  ENV3  =    'v"3'   \n   export ENV4="v\`4"
 ENV5="v'5" # comment
 ENV6=\`v'"6\`
 ENV7=
@@ -71,6 +71,17 @@ JSONSTR='{"foo": "b a r"}'`
 )
   })
 
+  test('accepts buffer input', () => {
+    const str = 'FOO=BAR\r\nBAz=QUZ'
+    const env = {
+      FOO: 'BAR',
+      BAz: 'QUZ',
+    }
+
+    assert.deepEqual(parse(Buffer.from(str, 'utf8')), env)
+    assert.deepEqual(parse(Buffer.from(str, 'ascii')), env)
+  })
+
   test('throws on invalid input', () => {
     assert.throws(() => parse('BRO-KEN=xyz123'))
     assert.throws(() => parse('BRO KEN=xyz123'))