First commit
Create basic render engine that only allows to add elements
This commit is contained in:
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GPG key ID:
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14 changed files with 414 additions and 0 deletions
24
.gitignore
vendored
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.gitignore
vendored
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# Logs
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logs
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*.log
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npm-debug.log*
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yarn-debug.log*
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yarn-error.log*
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pnpm-debug.log*
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lerna-debug.log*
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node_modules
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dist
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dist-ssr
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*.local
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# Editor directories and files
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.vscode/*
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!.vscode/extensions.json
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.idea
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.DS_Store
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*.suo
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*.ntvs*
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*.njsproj
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*.sln
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*.sw?
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13
README.md
13
README.md
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@ -1,2 +1,15 @@
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# yarjs
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To install dependencies:
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```bash
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bun install
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```
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To run:
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```bash
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bun run index.ts
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```
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This project was created using `bun init` in bun v1.1.16. [Bun](https://bun.sh) is a fast all-in-one JavaScript runtime.
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BIN
bun.lockb
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BIN
bun.lockb
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10
eslint.config.js
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10
eslint.config.js
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import globals from "globals";
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import pluginJs from "@eslint/js";
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import tseslint from "typescript-eslint";
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export default [
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{ files: ["**/*.{js,mjs,cjs,ts}"] },
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{ languageOptions: { globals: globals.browser } },
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pluginJs.configs.recommended,
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...tseslint.configs.recommended,
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];
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13
index.html
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13
index.html
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<!doctype html>
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<html lang="en">
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<head>
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<meta charset="UTF-8" />
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<link rel="icon" type="image/svg+xml" href="/vite.svg" />
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<meta name="viewport" content="width=device-width, initial-scale=1.0" />
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<title>Vite + TS</title>
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</head>
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<body>
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<div id="app"></div>
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<script type="module" src="/src/main.tsx"></script>
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</body>
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</html>
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22
package.json
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package.json
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{
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"name": "yarjs",
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"private": true,
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"version": "0.0.0",
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"type": "module",
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"scripts": {
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"dev": "vite",
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"build": "tsc && vite build",
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"preview": "vite preview"
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},
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"devDependencies": {
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"@eslint/js": "^9.5.0",
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"@types/bun": "latest",
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"@types/react": "^18.3.3",
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"eslint": "9.x",
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"globals": "^15.6.0",
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"typescript": "^5.2.2",
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"typescript-eslint": "^7.13.1",
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"vite": "^5.3.1"
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},
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"module": "index.ts"
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}
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1
public/vite.svg
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1
public/vite.svg
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<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" aria-hidden="true" role="img" class="iconify iconify--logos" width="31.88" height="32" preserveAspectRatio="xMidYMid meet" viewBox="0 0 256 257"><defs><linearGradient id="IconifyId1813088fe1fbc01fb466" x1="-.828%" x2="57.636%" y1="7.652%" y2="78.411%"><stop offset="0%" stop-color="#41D1FF"></stop><stop offset="100%" stop-color="#BD34FE"></stop></linearGradient><linearGradient id="IconifyId1813088fe1fbc01fb467" x1="43.376%" x2="50.316%" y1="2.242%" y2="89.03%"><stop offset="0%" stop-color="#FFEA83"></stop><stop offset="8.333%" stop-color="#FFDD35"></stop><stop offset="100%" stop-color="#FFA800"></stop></linearGradient></defs><path fill="url(#IconifyId1813088fe1fbc01fb466)" d="M255.153 37.938L134.897 252.976c-2.483 4.44-8.862 4.466-11.382.048L.875 37.958c-2.746-4.814 1.371-10.646 6.827-9.67l120.385 21.517a6.537 6.537 0 0 0 2.322-.004l117.867-21.483c5.438-.991 9.574 4.796 6.877 9.62Z"></path><path fill="url(#IconifyId1813088fe1fbc01fb467)" d="M185.432.063L96.44 17.501a3.268 3.268 0 0 0-2.634 3.014l-5.474 92.456a3.268 3.268 0 0 0 3.997 3.378l24.777-5.718c2.318-.535 4.413 1.507 3.936 3.838l-7.361 36.047c-.495 2.426 1.782 4.5 4.151 3.78l15.304-4.649c2.372-.72 4.652 1.36 4.15 3.788l-11.698 56.621c-.732 3.542 3.979 5.473 5.943 2.437l1.313-2.028l72.516-144.72c1.215-2.423-.88-5.186-3.54-4.672l-25.505 4.922c-2.396.462-4.435-1.77-3.759-4.114l16.646-57.705c.677-2.35-1.37-4.583-3.769-4.113Z"></path></svg>
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After Width: | Height: | Size: 1.5 KiB |
164
src/lib/YarJS.ts
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src/lib/YarJS.ts
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import {
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YarElement,
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YarFiber,
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YarHTMLTagName,
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YarProps,
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} from "./YarJs.interfaces";
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export function createTextElement(text: string) {
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return {
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type: "TEXT",
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props: {
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nodeValue: text,
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children: [],
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},
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};
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}
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export function createElement(
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type: YarHTMLTagName,
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props: YarProps,
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...children: YarElement[]
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) {
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return {
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type,
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props: {
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...props,
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children: children.map((child) =>
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typeof child === "object" ? child : createTextElement(child),
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),
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},
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};
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}
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function createDom(fiber: YarFiber) {
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const dom =
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fiber.type === "TEXT"
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? document.createTextNode("")
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: document.createElement(fiber.type);
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Object.keys(fiber.props)
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.filter((key) => key !== "children")
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.forEach((key) => {
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// @ts-expect-error: I cannot figure it out how to properly type the dom props
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dom[key] = fiber.props[key];
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});
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return dom;
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}
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let nextUnitOfWork: YarFiber | null | undefined = null;
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let wipRoot: YarFiber | null | undefined = null;
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function commitWork(fiber: YarFiber | null) {
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if (!fiber) return;
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const domParent = fiber.parent!.dom!;
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domParent.appendChild(fiber.dom!);
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commitWork(fiber.child);
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commitWork(fiber.sibling);
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}
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function commitRoot() {
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if (!wipRoot) return;
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commitWork(wipRoot.child);
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wipRoot = null;
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}
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function workLoop(deadline: IdleDeadline) {
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let shouldYield = false;
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while (nextUnitOfWork && !shouldYield) {
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nextUnitOfWork = performUnitOfWork(nextUnitOfWork);
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shouldYield = deadline.timeRemaining() < 1;
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}
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if (!nextUnitOfWork && wipRoot) {
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commitRoot();
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}
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requestIdleCallback(workLoop);
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}
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requestIdleCallback(workLoop);
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function performUnitOfWork(fiber: YarFiber) {
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// Process the Fiber Tree, this is a representation of the DOM
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// Since this this process could be interrupted before the whole
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// tree is processed, we just do the representation and computation here,
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// then in "commitWork" we add the representation to the actual DOM
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if (!fiber.dom) {
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// Create the actual dom element
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fiber.dom = createDom(fiber);
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}
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// Create a new fiber for each child
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const elements = fiber.props.children;
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let index = 0;
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let prevSibling: YarFiber | null = null;
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while (index < elements.length) {
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const element = elements[index];
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const newFiber = {
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parent: fiber,
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type: element.type,
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props: element.props,
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child: null,
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sibling: null,
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dom: null,
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};
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// Each Fiber only holds a reference to it's first child (in the Fiber Tree representation),
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// so if is the first new Fiber we add it as a child to the parent,
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// if is not, we add as a sibling of the last child
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// Nonetheless, each fiber has a reference to it's parent
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if (index === 0) {
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fiber.child = newFiber;
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} else if (prevSibling !== null) {
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prevSibling.sibling = newFiber;
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}
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prevSibling = newFiber;
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index++;
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}
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// Search for the new fiber that needs to be processed
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if (fiber.child) {
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// return the first child of the current fiber
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return fiber.child;
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}
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let nextFiber = fiber;
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while (nextFiber) {
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if (nextFiber.sibling) {
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// return the next sibling of the current fiber
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return nextFiber.sibling;
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}
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// Reference the parent so we look at the "uncle" (parent sibling)
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// in the next itereation
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nextFiber = nextFiber.parent!;
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}
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}
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export function render(element: React.JSX.Element, container: HTMLElement) {
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wipRoot = {
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type: "",
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dom: container,
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parent: null,
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child: null,
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sibling: null,
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props: {
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children: [element],
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},
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};
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nextUnitOfWork = wipRoot;
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}
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export function Fragment() {}
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export default { render, createElement, Fragment };
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18
src/lib/YarJs.interfaces.ts
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src/lib/YarJs.interfaces.ts
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export type YarHTMLTagName = keyof React.JSX.IntrinsicElements | string;
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export type YarProps = {
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children: YarElement[];
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[key: string]: unknown;
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};
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export interface YarElement {
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type: YarHTMLTagName;
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props: YarProps;
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}
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export interface YarFiber extends YarElement {
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parent: null | YarFiber;
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dom: null | HTMLElement | Text;
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child: null | YarFiber;
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sibling: null | YarFiber;
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}
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src/main.tsx
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src/main.tsx
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import "./style.css";
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import { render } from "./lib/YarJS";
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const root = document.querySelector<HTMLDivElement>("#app")!;
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const element = (
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<div id="foo">
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<a>bar</a>
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<b />
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</div>
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);
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render(element, root);
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src/style.css
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src/style.css
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:root {
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font-family: Inter, system-ui, Avenir, Helvetica, Arial, sans-serif;
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line-height: 1.5;
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font-weight: 400;
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color-scheme: light dark;
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color: rgba(255, 255, 255, 0.87);
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background-color: #242424;
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font-synthesis: none;
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text-rendering: optimizeLegibility;
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-webkit-font-smoothing: antialiased;
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-moz-osx-font-smoothing: grayscale;
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}
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a {
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font-weight: 500;
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color: #646cff;
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text-decoration: inherit;
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}
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a:hover {
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color: #535bf2;
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}
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body {
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margin: 0;
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display: flex;
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place-items: center;
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min-width: 320px;
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min-height: 100vh;
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}
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h1 {
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font-size: 3.2em;
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line-height: 1.1;
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}
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#app {
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max-width: 1280px;
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margin: 0 auto;
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padding: 2rem;
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text-align: center;
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}
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.logo {
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height: 6em;
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padding: 1.5em;
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will-change: filter;
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transition: filter 300ms;
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}
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.logo:hover {
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filter: drop-shadow(0 0 2em #646cffaa);
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}
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.logo.vanilla:hover {
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filter: drop-shadow(0 0 2em #3178c6aa);
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}
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.card {
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padding: 2em;
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}
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.read-the-docs {
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color: #888;
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}
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button {
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border-radius: 8px;
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border: 1px solid transparent;
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padding: 0.6em 1.2em;
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font-size: 1em;
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font-weight: 500;
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font-family: inherit;
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background-color: #1a1a1a;
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cursor: pointer;
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transition: border-color 0.25s;
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}
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button:hover {
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border-color: #646cff;
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}
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button:focus,
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button:focus-visible {
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outline: 4px auto -webkit-focus-ring-color;
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}
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@media (prefers-color-scheme: light) {
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:root {
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color: #213547;
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background-color: #ffffff;
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}
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a:hover {
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color: #747bff;
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}
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button {
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background-color: #f9f9f9;
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}
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}
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1
src/vite-env.d.ts
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1
src/vite-env.d.ts
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/// <reference types="vite/client" />
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29
tsconfig.json
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29
tsconfig.json
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{
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"compilerOptions": {
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"jsx": "preserve",
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"target": "ES2020",
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"useDefineForClassFields": true,
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"module": "ESNext",
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"lib": ["ES2020", "DOM", "DOM.Iterable"],
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"skipLibCheck": true,
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"paths": {
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"@/*": ["./*"]
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},
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/* Bundler mode */
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"moduleResolution": "bundler",
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"allowImportingTsExtensions": true,
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"resolveJsonModule": true,
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"isolatedModules": true,
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"moduleDetection": "force",
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"noEmit": true,
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/* Linting */
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"strict": true,
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"noUnusedLocals": true,
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"noUnusedParameters": true,
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"noFallthroughCasesInSwitch": true
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},
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"include": ["src"]
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}
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10
vite.config.ts
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10
vite.config.ts
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// vite.config.js
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import { defineConfig } from "vite";
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export default defineConfig({
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esbuild: {
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jsxFactory: "createElement",
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jsxFragment: "Fragment",
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jsxInject: `import {createElement, Fragment} from './lib/YarJS'`,
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},
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});
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Reference in a new issue