--- /dev/null
+
+/**
+ * This is the common logic for both the Node.js and web browser
+ * implementations of `debug()`.
+ */
+
+function setup(env) {
+ createDebug.debug = createDebug;
+ createDebug.default = createDebug;
+ createDebug.coerce = coerce;
+ createDebug.disable = disable;
+ createDebug.enable = enable;
+ createDebug.enabled = enabled;
+ createDebug.humanize = require('ms');
+
+ Object.keys(env).forEach(key => {
+ createDebug[key] = env[key];
+ });
+
+ /**
+ * Active `debug` instances.
+ */
+ createDebug.instances = [];
+
+ /**
+ * The currently active debug mode names, and names to skip.
+ */
+
+ createDebug.names = [];
+ createDebug.skips = [];
+
+ /**
+ * Map of special "%n" handling functions, for the debug "format" argument.
+ *
+ * Valid key names are a single, lower or upper-case letter, i.e. "n" and "N".
+ */
+ createDebug.formatters = {};
+
+ /**
+ * Selects a color for a debug namespace
+ * @param {String} namespace The namespace string for the for the debug instance to be colored
+ * @return {Number|String} An ANSI color code for the given namespace
+ * @api private
+ */
+ function selectColor(namespace) {
+ let hash = 0;
+
+ for (let i = 0; i < namespace.length; i++) {
+ hash = ((hash << 5) - hash) + namespace.charCodeAt(i);
+ hash |= 0; // Convert to 32bit integer
+ }
+
+ return createDebug.colors[Math.abs(hash) % createDebug.colors.length];
+ }
+ createDebug.selectColor = selectColor;
+
+ /**
+ * Create a debugger with the given `namespace`.
+ *
+ * @param {String} namespace
+ * @return {Function}
+ * @api public
+ */
+ function createDebug(namespace) {
+ let prevTime;
+
+ function debug(...args) {
+ // Disabled?
+ if (!debug.enabled) {
+ return;
+ }
+
+ const self = debug;
+
+ // Set `diff` timestamp
+ const curr = Number(new Date());
+ const ms = curr - (prevTime || curr);
+ self.diff = ms;
+ self.prev = prevTime;
+ self.curr = curr;
+ prevTime = curr;
+
+ args[0] = createDebug.coerce(args[0]);
+
+ if (typeof args[0] !== 'string') {
+ // Anything else let's inspect with %O
+ args.unshift('%O');
+ }
+
+ // Apply any `formatters` transformations
+ let index = 0;
+ args[0] = args[0].replace(/%([a-zA-Z%])/g, (match, format) => {
+ // If we encounter an escaped % then don't increase the array index
+ if (match === '%%') {
+ return match;
+ }
+ index++;
+ const formatter = createDebug.formatters[format];
+ if (typeof formatter === 'function') {
+ const val = args[index];
+ match = formatter.call(self, val);
+
+ // Now we need to remove `args[index]` since it's inlined in the `format`
+ args.splice(index, 1);
+ index--;
+ }
+ return match;
+ });
+
+ // Apply env-specific formatting (colors, etc.)
+ createDebug.formatArgs.call(self, args);
+
+ const logFn = self.log || createDebug.log;
+ logFn.apply(self, args);
+ }
+
+ debug.namespace = namespace;
+ debug.enabled = createDebug.enabled(namespace);
+ debug.useColors = createDebug.useColors();
+ debug.color = selectColor(namespace);
+ debug.destroy = destroy;
+ debug.extend = extend;
+ // Debug.formatArgs = formatArgs;
+ // debug.rawLog = rawLog;
+
+ // env-specific initialization logic for debug instances
+ if (typeof createDebug.init === 'function') {
+ createDebug.init(debug);
+ }
+
+ createDebug.instances.push(debug);
+
+ return debug;
+ }
+
+ function destroy() {
+ const index = createDebug.instances.indexOf(this);
+ if (index !== -1) {
+ createDebug.instances.splice(index, 1);
+ return true;
+ }
+ return false;
+ }
+
+ function extend(namespace, delimiter) {
+ const newDebug = createDebug(this.namespace + (typeof delimiter === 'undefined' ? ':' : delimiter) + namespace);
+ newDebug.log = this.log;
+ return newDebug;
+ }
+
+ /**
+ * Enables a debug mode by namespaces. This can include modes
+ * separated by a colon and wildcards.
+ *
+ * @param {String} namespaces
+ * @api public
+ */
+ function enable(namespaces) {
+ createDebug.save(namespaces);
+
+ createDebug.names = [];
+ createDebug.skips = [];
+
+ let i;
+ const split = (typeof namespaces === 'string' ? namespaces : '').split(/[\s,]+/);
+ const len = split.length;
+
+ for (i = 0; i < len; i++) {
+ if (!split[i]) {
+ // ignore empty strings
+ continue;
+ }
+
+ namespaces = split[i].replace(/\*/g, '.*?');
+
+ if (namespaces[0] === '-') {
+ createDebug.skips.push(new RegExp('^' + namespaces.substr(1) + '$'));
+ } else {
+ createDebug.names.push(new RegExp('^' + namespaces + '$'));
+ }
+ }
+
+ for (i = 0; i < createDebug.instances.length; i++) {
+ const instance = createDebug.instances[i];
+ instance.enabled = createDebug.enabled(instance.namespace);
+ }
+ }
+
+ /**
+ * Disable debug output.
+ *
+ * @return {String} namespaces
+ * @api public
+ */
+ function disable() {
+ const namespaces = [
+ ...createDebug.names.map(toNamespace),
+ ...createDebug.skips.map(toNamespace).map(namespace => '-' + namespace)
+ ].join(',');
+ createDebug.enable('');
+ return namespaces;
+ }
+
+ /**
+ * Returns true if the given mode name is enabled, false otherwise.
+ *
+ * @param {String} name
+ * @return {Boolean}
+ * @api public
+ */
+ function enabled(name) {
+ if (name[name.length - 1] === '*') {
+ return true;
+ }
+
+ let i;
+ let len;
+
+ for (i = 0, len = createDebug.skips.length; i < len; i++) {
+ if (createDebug.skips[i].test(name)) {
+ return false;
+ }
+ }
+
+ for (i = 0, len = createDebug.names.length; i < len; i++) {
+ if (createDebug.names[i].test(name)) {
+ return true;
+ }
+ }
+
+ return false;
+ }
+
+ /**
+ * Convert regexp to namespace
+ *
+ * @param {RegExp} regxep
+ * @return {String} namespace
+ * @api private
+ */
+ function toNamespace(regexp) {
+ return regexp.toString()
+ .substring(2, regexp.toString().length - 2)
+ .replace(/\.\*\?$/, '*');
+ }
+
+ /**
+ * Coerce `val`.
+ *
+ * @param {Mixed} val
+ * @return {Mixed}
+ * @api private
+ */
+ function coerce(val) {
+ if (val instanceof Error) {
+ return val.stack || val.message;
+ }
+ return val;
+ }
+
+ createDebug.enable(createDebug.load());
+
+ return createDebug;
+}
+
+module.exports = setup;
projects / dotfiles / .git / blobdiff