Update to NPM version

ProjectSourceCode/node_modules/spex/lib/utils/static.js

@@ -0,0 +1,75 @@
+const npm = {
+    stream: require('stream'),
+    util: require('util')
+};
+
+/////////////////////////////////////
+// Checks if the value is a promise;
+function isPromise(value) {
+    return value && typeof value.then === 'function';
+}
+
+////////////////////////////////////////////
+// Checks object for being a readable stream;
+
+function isReadableStream(obj) {
+    return obj instanceof npm.stream.Stream &&
+        typeof obj._read === 'function' &&
+        typeof obj._readableState === 'object';
+}
+
+////////////////////////////////////////////////////////////
+// Sets an object property as read-only and non-enumerable.
+function extend(obj, name, value) {
+    Object.defineProperty(obj, name, {
+        value: value,
+        configurable: false,
+        enumerable: false,
+        writable: false
+    });
+}
+
+///////////////////////////////////////////
+// Returns a space gap for console output;
+function messageGap(level) {
+    return ' '.repeat(level * 4);
+}
+
+function formatError(error, level) {
+    const names = ['BatchError', 'PageError', 'SequenceError'];
+    let msg = npm.util.inspect(error);
+    if (error instanceof Error) {
+        if (names.indexOf(error.name) === -1) {
+            const gap = messageGap(level);
+            msg = msg.split('\n').map((line, index) => {
+                return (index ? gap : '') + line;
+            }).join('\n');
+        } else {
+            msg = error.toString(level);
+        }
+    }
+    return msg;
+}
+
+////////////////////////////////////////////////////////
+// Adds prototype inspection, with support of the newer
+// Custom Inspection, which was added in Node.js 6.x
+function addInspection(type, cb) {
+    // istanbul ignore next;
+    if (npm.util.inspect.custom) {
+        // Custom inspection is supported:
+        type.prototype[npm.util.inspect.custom] = cb;
+    } else {
+        // Use classic inspection:
+        type.prototype.inspect = cb;
+    }
+}
+
+module.exports = {
+    addInspection: addInspection,
+    formatError: formatError,
+    isPromise: isPromise,
+    isReadableStream: isReadableStream,
+    messageGap: messageGap,
+    extend: extend
+};