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introduce debug.unique() #544

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introduce debug.unique() #544

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65 changes: 53 additions & 12 deletions src/common.js
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Expand Up @@ -65,6 +65,24 @@ module.exports = function setup(env) {

function createDebug(namespace) {
var prevTime;
var lastId = 0;

function prepareArgs() {
// turn the `arguments` into a proper Array
var args = new Array(arguments.length);
for (var i = 0; i < args.length; i++) {
args[i] = arguments[i];
}

args[0] = createDebug.coerce(args[0]);

if ('string' !== typeof args[0]) {
// anything else let's inspect with %O
args.unshift('%O');
}

return args;
}

function debug() {
// disabled?
Expand All @@ -80,18 +98,7 @@ module.exports = function setup(env) {
self.curr = curr;
prevTime = curr;

// turn the `arguments` into a proper Array
var args = new Array(arguments.length);
for (var i = 0; i < args.length; i++) {
args[i] = arguments[i];
}

args[0] = createDebug.coerce(args[0]);

if ('string' !== typeof args[0]) {
// anything else let's inspect with %O
args.unshift('%O');
}
var args = prepareArgs.apply(self, arguments);

// apply any `formatters` transformations
var index = 0;
Expand All @@ -118,11 +125,45 @@ module.exports = function setup(env) {
logFn.apply(self, args);
}

function unique (format) {
var uniqueId = null;

format = format ? format + ' ' : '%d ';

function subdebug () {
// disabled?
if (!debug.enabled) return;

var self = debug;

var args = prepareArgs.apply(self, arguments);

args[0] = format + args[0];
args.splice(1, 0, id());

return debug.apply(self, args);
}

function id () {
if (!debug.enabled) return;

if (uniqueId === null)
uniqueId = lastId++;

return uniqueId;
}

subdebug.id = id;

return subdebug;
}

debug.namespace = namespace;
debug.enabled = createDebug.enabled(namespace);
debug.useColors = createDebug.useColors();
debug.color = selectColor(namespace);
debug.destroy = destroy;
debug.unique = unique;
//debug.formatArgs = formatArgs;
//debug.rawLog = rawLog;

Expand Down