Support clipbard on MacOS

e2e/lib/clipboard.ts

@@ -37,6 +37,43 @@ const writeLinux = (data: string): Promise<string> => {
   });
 };
 
+const readDarwin = (): Promise<string> => {
+  let stdout = '', stderr = '';
+  return new Promise((resolve) => {
+    let pbpaste = spawn('pbpaste');
+    pbpaste.stdout.on('data', (data) => {
+      stdout += data;
+    });
+    pbpaste.stderr.on('data', (data) => {
+      stderr += data;
+    });
+    pbpaste.on('close', (code) => {
+      if (code !== 0) {
+        throw new Error(`pbpaste returns ${code}: ${stderr}`)
+      }
+      resolve(stdout);
+    });
+  });
+};
+
+const writeDarwin = (data: string): Promise<string> => {
+  let stderr = '';
+  return new Promise((resolve) => {
+    let pbcopy = spawn('pbcopy');
+    pbcopy.stderr.on('data', (data) => {
+      stderr += data;
+    });
+    pbcopy.on('close', (code) => {
+      if (code !== 0) {
+        throw new Error(`pbcopy returns ${code}: ${stderr}`)
+      }
+      resolve();
+    });
+    pbcopy.stdin.write(data);
+    pbcopy.stdin.end();
+  });
+};
+
 class UnsupportedError extends Error {
   constructor(platform: string) {
     super();
@@ -48,6 +85,8 @@ const read = () => {
   switch (process.platform) {
   case 'linux':
     return readLinux();
+  case 'darwin':
+    return readDarwin();
   }
   throw new UnsupportedError(process.platform);
 }
@@ -56,6 +95,8 @@ const write = (data: string) => {
   switch (process.platform) {
   case 'linux':
     return writeLinux(data);
+  case 'darwin':
+    return writeDarwin(data);
   }
   throw new UnsupportedError(process.platform);
 }