lib/tty.js: expose hasColor and getColorDepth directly

Author: thunder-coding

lib/tty.js

@@ -35,6 +35,7 @@ const {
   getColorDepth,
   hasColors
 } = require('internal/tty');
+const { deprecate } = require('internal/util');
 
 // Lazy loaded for startup performance.
 let readline;
@@ -119,9 +120,17 @@ ObjectSetPrototypeOf(WriteStream, net.Socket);
 
 WriteStream.prototype.isTTY = true;
 
-WriteStream.prototype.getColorDepth = getColorDepth;
+WriteStream.prototype.getColorDepth = deprecate(
+  getColorDepth,
+  'tty.WriteStream.getColorDepth is deprecated. ' +
+  'Please use tty.getColorDepth instead.',
+  'DEP0156');
 
-WriteStream.prototype.hasColors = hasColors;
+WriteStream.prototype.hasColors = deprecate(
+  hasColors,
+  'tty.WriteStream.hasColors is deprecated. ' +
+  'Please use tty.hasColors instead.',
+  'DEP0157');
 
 WriteStream.prototype._refreshSize = function() {
   const oldCols = this.columns;
@@ -161,4 +170,4 @@ WriteStream.prototype.getWindowSize = function() {
   return [this.columns, this.rows];
 };
 
-module.exports = { isatty, ReadStream, WriteStream };
+module.exports = { isatty, getColorDepth, hasColors, ReadStream, WriteStream };

test/parallel/test-tty-deprecated-methods.js

@@ -0,0 +1,18 @@
+'use strict';
+
+const { expectWarning } = require('../common');
+const { WriteStream } = require('tty');
+
+expectWarning({
+  DeprecationWarning: {
+    DEP0157: 'tty.WriteStream.hasColors is deprecated. ' +
+      'Please use tty.hasColors instead.',
+    DEP0156: 'tty.WriteStream.getColorDepth is deprecated. ' +
+      'Please use tty.getColorDepth instead.'
+  }
+});
+
+const writeStream = WriteStream(1);
+
+writeStream.hasColors();
+writeStream.getColorDepth();