util: improve inspection.

lib/utils/util.js

@@ -16,6 +16,20 @@ const nodeUtil = require('util');
 
 const util = exports;
 
+/*
+ * Constants
+ */
+
+const inspectOptions = {
+  showHidden: false,
+  depth: 20,
+  colors: false,
+  customInspect: true,
+  showProxy: false,
+  maxArrayLength: Infinity,
+  breakLength: 60
+};
+
 /**
  * Return hrtime (shim for browser).
  * @param {Array} time
@@ -278,9 +292,11 @@ util.isFloat = function isFloat(value) {
  */
 
 util.inspectify = function inspectify(obj, color) {
-  return typeof obj !== 'string'
-    ? nodeUtil.inspect(obj, null, 20, color !== false)
-    : obj;
+  if (typeof obj === 'string')
+    return obj;
+
+  inspectOptions.colors = color !== false;
+  return nodeUtil.inspect(obj, inspectOptions);
 };
 
 /**
@@ -300,12 +316,12 @@ util.fmt = nodeUtil.format;
  */
 
 util.format = function format(args, color) {
-  if (color == null)
-    color = process.stdout ? process.stdout.isTTY : false;
-
-  return typeof args[0] === 'object'
-    ? util.inspectify(args[0], color)
-    : util.fmt.apply(util, args);
+  if (args.length > 0 && args[0] && typeof args[0] === 'object') {
+    if (color == null)
+      color = !!(process.stdout && process.stdout.isTTY);
+    return util.inspectify(args[0], color);
+  }
+  return util.fmt(...args);
 };
 
 /**
@@ -318,14 +334,17 @@ util.log = function log(...args) {
   let msg;
 
   if (!process.stdout) {
-    msg = typeof args[0] !== 'object'
-      ? util.format(args, false)
-      : args[0];
+    if (args.length > 0) {
+      msg = typeof args[0] !== 'object'
+        ? util.fmt(...args)
+        : args[0];
+    }
     console.log(msg);
     return;
   }
 
   msg = util.format(args);
+
   process.stdout.write(msg + '\n');
 };
 
@@ -339,14 +358,17 @@ util.error = function error(...args) {
   let msg;
 
   if (!process.stderr) {
-    msg = typeof args[0] !== 'object'
-      ? util.format(args, false)
-      : args[0];
+    if (args.length > 0) {
+      msg = typeof args[0] !== 'object'
+        ? util.fmt(...args)
+        : args[0];
+    }
     console.error(msg);
     return;
   }
 
   msg = util.format(args);
+
   process.stderr.write(msg + '\n');
 };
 
@@ -365,9 +387,7 @@ util.now = function now() {
  */
 
 util.ms = function ms() {
-  if (Date.now)
-    return Date.now();
-  return +new Date();
+  return Date.now();
 };
 
 /**
@@ -385,7 +405,7 @@ util.date = function date(ts) {
 
 /**
  * Get unix seconds from a Date string.
- * @param {String} date - Date ISO String.
+ * @param {String?} date - Date ISO String.
  * @returns {Number}
  */