// Copyright 2021 Liuxiangchao iwind.liu@gmail.com. All rights reserved.
//go:build script
// +build script

package js

var LibraryUtilsJavascript = `
let gojs = {}

gojs.prepareNamespace = function (ns) {
	let pieces = ns.split(".")
	let parent = gojs
	let index = 0
	pieces.forEach(function (piece) {
		if (piece == "gojs" && index == 0) {
			return
		}
		if (typeof(parent[piece]) == "undefined") {
			parent[piece] = {}
		}
		parent = parent[piece]
		index ++
	})
}

gojs.copyAttrs = function (destObj, srcObj) {
	if (typeof(srcObj) !== "object") {
		return
	}
	for (let k in srcObj) {
		if (srcObj.hasOwnProperty(k)) {
			destObj[k] = srcObj[k]
		}
	}
}

BigInt.prototype.toJSON = function () {
	return this.toString()
}

{
	let callbacks = []
	gojs.once = function (f) {
		if (typeof(f) == "function") {
			callbacks.push(f)
		}
	}
	
	gojs.runOnce = function () {
		callbacks.forEach(function (f){
			try {
				f()
			} catch(e) {
				var fString = f.toString()
				if (fString.length > 100) {
					fString = fString.substr(0, 100) + "..."
				}
				throw new Error(fString + ": " + e.toString())
			}
		})
	}
}
`