Utilities for Deus Legem Creation System


001.3.03 years ago3 years agoMinified + gzip package size for @dlcs/tools in KB


DLCS Tools

status npm

Tools includes some functions and classes that provide support for other parts of Deus Legem Creation System.


import { AdvancedTree, AdvancedTreeNodeStatus } from '@dlcs/tools';

Advanced tree is a normal tree with weight values and on/off switches on each node, it has method called map() that use user given mapper function to map each node of this tree using DFS (O(n)).

const root = new AdvancedTree<number>(0);
const child1 = new AdvancedTree<number>(1, 'ID: 1');
const child2 = new AdvancedTree<number>(2, 'ID: 2');

child1.parent = child2.parent = root; // set parent
child2.next; // in this situation, next is undefined
child12.priority = 100; // set priority
child2.next; // now next is child1
child1.previous; // also child1's previous is child2
child2.enabled = false; // disable child2
child1.content += child2.content; // read and write content
const sum = root.map<number>((node, result, feedback) => result += node.content, 0); // sum all node's value
// because child2 is disabled, result should be child1.content + root.content
root.destroy(); // destroy this tree


import { autoname, toCamelCase, toPascalCase, toSnakeCase } from '@dlcs/tools';

Autoname can deep scan an object and set value of each key to map path using transfer function. It only set key-value pairs that value's type is string.

const source = {
    messageConf: '',
    responseConf: {
        mask: '',
        tag: ''
// output: { messageConf: '/messageConf', responseConf: { mask: '/responseConf/mask', tag: '/responseConf/tag' } }
autoname(source, '/', toPascalCase);
// output: { messageConf: '/MessageConf', responseConf: { mask: '/ResponseConf/Mask', tag: '/ResponseConf/Tag' } }
autoname(source, '/', toSnakeCase);
// output: { messageConf: '/message_conf', responseConf: { mask: '/response_conf/mask', tag: '/response_conf/tag' } }
autoname(source, '.', item => item.toUpperCase());
// output: { messageConf: '.MESSAGECONF', responseConf: { mask: '.RESPONSECONF.MASK', tag: '.RESPONSECONF.TAG' } }
autoname(source, '/', 'message://', toPascalCase);
// output: { messageConf: 'message:///MessageConf', responseConf: { mask: 'message:///ResponseConf/Mask', tag: 'message:///ResponseConf/Tag' } }

const source2 = {
    node1: '',
    node2: true,
    node3: 1
// output: { node1: '/node1', node2: true, node3: 1 }

This function is not immutable, it will change source's content.


import { callStack, CallStackItem } from '@dlcs/tools';

A function that returns current call stack's information, includes identifiers, file name, file position and line number.

const stack: CallStackItem[] = callStack();
console.log(`Current code is in file ${stack[0].fileName}, line number ${stack[0].line}`);
// in safari, information will be less than other browsers


import { CancelledEventArgs } from '@dlcs/tools';

A class only has one bollean field called cancelled. Use for user when produce cancelable data in message loop.

const arg = new CancelledEventArgs();
arg.cancelled = true;


import { createUUIDString } from '@dlcs/tools';

A function returns an upper case UUID v4 string with hyphen.

const uuid = createUUIDString(); // e.g. "87E333D4-E195-49A9-94E1-1BF4119B6164"


import { environment, ContextEnvironment } from '@dlcs/tools';

A function returns context environment includes browser info, device info, etc.

const info: ContextEnvironment = environment;
console.log(`Browser: ${info.browser.name}, OS: ${info.system.name}, Device: ${info.device.name}`);


import { isMatch } from '@dlcs/tools';

Test regexp with source (param 2) when tester (param 1) is regexp, or equals to source when tester is string. If tester is null/undefined or empty string, function will return true. If source is null/undefined or empty string, function will return false.

isMatch('123', '123'); // true
isMatch('123', '456'); // false
isMatch('', '456'); // true
isMatch('123', ''); // false
isMatch(/\d+/g, '123'); // true
isMatch(null, '123'); // true


import { isValueAvailable } from '@dlcs/tools';

Indicate if target is not null, undefined, or empty string.

isValueAvailable(null); // false
isValueAvailable(''); // false
isValueAvailable('123'); // true


import { SerializableNode, ISerializableNode } from '@dlcs/tools';

SerializableNode is a way to store simple data like configuration in a tree-based structure that can be serialized to JSON.

const root = new SerializableNode('root', undefined); // We need one root node
root.set('/config/message/default_mask', 1); // Save data
root.set('/extra/providers/storage/root_name', 'DLCS');
const defaultMask = root.get('/config/message/default_mask') as number; // Read data

root.get('/config/message/'); // Will be undefined. Parent node does not have children's data.

// Advanced usages
const messageConfig = root.find('/config/message'); // Get raw message node
messageConfig.set('/default_mask', 1); // Use messageConfig as root in this scene
const messageConfigAddress = root.address(messageConfig); // Will get messageConfig's address starts from root: /config/message
root.drop(messageConfig); // Drop messageConfig node and all its children
root.drop('/config/message'); // Same as above

// Serialize and deserialize
const json = JSON.stringify(root.serialize());
const new_root = SerializableNode.deserialize(JSON.parse(json));

Attention: _$k and _$v are keywords of SerializableNode, they cannot be any node's key (not value).

Thread<T, U>

import { Thread, ThreadMode } from '@dlcs/tools';

Create thread using web worker/promise/setTimeout and rxjs. See Thread's documentation comments for more information. Please allow blob: in your security settings to enable worker.

Thread has three modes: WebWorker, Promise and setTimeout. If mode is not given by constructor, Thread will try to use WebWorker first, then Promise, finally setTimeout.

const thread = new Thread<string, number>((value: string) => +value);
thread.computed = value => {
    thread.stop(); // destroy thread if thread is not using Promise mode

Notice: handler function (in constructor)'s this pointer will be redirect to worker's context in WebWorker mode. Besides, at that situation handler function cannot access any data out of worker's context.

If you find any bugs or have a feature request, please open an issue on github!

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