initial javascript rewrite

node_modules/nodemailer/lib/mime-node/last-newline.js

@@ -0,0 +1,33 @@
+'use strict';
+
+const Transform = require('stream').Transform;
+
+class LastNewline extends Transform {
+    constructor() {
+        super();
+        this.lastByte = false;
+    }
+
+    _transform(chunk, encoding, done) {
+        if (chunk.length) {
+            this.lastByte = chunk[chunk.length - 1];
+        }
+
+        this.push(chunk);
+        done();
+    }
+
+    _flush(done) {
+        if (this.lastByte === 0x0a) {
+            return done();
+        }
+        if (this.lastByte === 0x0d) {
+            this.push(Buffer.from('\n'));
+            return done();
+        }
+        this.push(Buffer.from('\r\n'));
+        return done();
+    }
+}
+
+module.exports = LastNewline;