Copy cell data and paste on different ranges based on date

Question

Hi I'm extremely new to this and I would like to seek assistance with my code.

Please see my code below:

// package.json
"jest": {
  "moduleNameMapper": {
      "^@assets.+\\.(png)$": "<rootDir>/assetsTransformer.js"
  },
}

// assetsTransformers.js
const path = require('path');

module.exports = {
  process(src, filename, config, options) {
    return 'module.exports = ' + JSON.stringify(path.basename(filename)) + ';';
  },
};

So what i'm looking for is that if the value of B1 changed from 8/1/2017 to 8/2/2017, the date will be paste to another worksheet to a different range. Please help me. :(