index.js — react Source File

Source Code

import React, {PureComponent, startTransition} from 'react';
import {createRoot} from 'react-dom/client';
import _ from 'lodash';
import Charts from './Charts';
import Clock from './Clock';
import './index.css';

let cachedData = new Map();

class App extends PureComponent {
  state = {
    value: '',
    strategy: 'sync',
    showDemo: true,
    showClock: false,
  };

  // Random data for the chart
  getStreamData(input) {
    if (cachedData.has(input)) {
      return cachedData.get(input);
    }
    const multiplier = input.length !== 0 ? input.length : 1;
    const complexity =
      (parseInt(window.location.search.slice(1), 10) / 100) * 25 || 25;
    const data = _.range(5).map(t =>
      _.range(complexity * multiplier).map((j, i) => {
        return {
          x: j,
          y: (t + 1) * _.random(0, 255),
        };
      })
    );
    cachedData.set(input, data);
    return data;
  }

  componentDidMount() {
    window.addEventListener('keydown', e => {
      if (e.key.toLowerCase() === '?') {
        e.preventDefault();
        this.setState(state => ({
          showClock: !state.showClock,
        }));
      }
    });
  }

  handleChartClick = e => {
    if (this.state.showDemo) {
      if (e.shiftKey) {
        this.setState({showDemo: false});
      }
      return;
    }
    if (this.state.strategy !== 'async') {
      this.setState(state => ({
        showDemo: !state.showDemo,
      }));
      return;
// ... (87 more lines)