sdk-local.js

/* eslint-disable @typescript-eslint/no-var-requires */

const {
    readFileSync,
    writeFileSync,
    existsSync
  } = require('fs');
  
  const fix = `fallback:{
    crypto: require.resolve("crypto-browserify"),
    stream: require.resolve("stream-browserify"),
    util: require.resolve("util"),
  },`;
  
  
  const patchTag = '//-patched';
  
  const fileToPatch = 'node_modules/@angular-devkit/build-angular/src/webpack/configs/browser.js';
  const codeToPatch = 'mainFields: [\'es2020\', \'es2015\', \'browser\', \'module\', \'main\'],';
  const patch =codeToPatch+ fix +patchTag;
  
  
  function getAllIndexes(arr, val) {
    const indexes = [];
    let  i;
    console.log('arr ', arr)
    console.log('val ', val)
    for (i = 0; i < arr.length; i++)
    {if (arr[i].indexOf(val) !== -1)
    {indexes.push(i);}}
    return indexes;
  }
  function doPatch(fileName, sourceCode, patchCode, patchIdentifier) {
    if (!existsSync(fileName)) {
      console.log('file not found ' + fileName);
      return;
    }
    const contents = readFileSync(fileName).toString().split('\n');
    // Check if code has been patched already
    const hasBeenPatched = contents.find(line => line.indexOf(patchIdentifier) !== -1);
  
    if (!hasBeenPatched) {
        console.log('sourceCode', sourceCode);
      const lineNumbers = getAllIndexes(contents, sourceCode);
      console.log('lineNumbers', lineNumbers, contents);
      if (lineNumbers.length < 1) {
        console.error('Could not find source code. Please check ' + fileName + ' and update the patch accordingly');
        return;
      }
      // replace the line
      lineNumbers.forEach((lineNumber) => {
        contents.splice(lineNumber, 1, patchCode);
      });
      const updatedContents = contents.join('\n');
      writeFileSync(fileName, updatedContents);
  
      console.log('Monkey patched');
    } else {
      console.log('already been patched');
    }
  }
  doPatch(fileToPatch, codeToPatch, patch, patchTag);/* eslint-disable @typescript-eslint/no-var-requires */