Regular expression for identifying a specific attribute paired with its corresponding value in a JSON object

Below is a JSON structure that I am working with:

'use strict';

// some comment is going to be here
module.exports = {
  property1: 'value1',
  property2: 999,
};

I am looking to remove the property2: 999, from the JSON. I attempted to achieve this using the following method:

var x = "    'use strict';\n"
+ "    // some comment is going to be here\n"
+ "    module.exports = {\n"
+ "      property1: 'value1',\n"
+ "      property2: 999,\n"
+ "    };\n";

alert(x.replace(/property2: 999,/, ""));

DEMO

I want to find a better way to remove the specified property and its value from the JSON structure. The aim is to ensure we are targeting it accurately within the JSON object. Here's the desired outcome:

'use strict';

// some comment is going to be here
module.exports = {
  property1: 'value1',
};

Answer №1

To maintain a valid JSON, it is essential to not only substitute property2, but also the preceding comma ,.

The recommended approach would be parsing the text and removing it for better safety instead of using .replace() with a regex. However, if you choose to go with regex, here is how you can achieve it:

(/,\n\s+property2: 999,/

Check out the demo below:

This code snippet demonstrates how to remove property2:

var x = "    'use strict';\n"
+ "    // some comment is going to be here\n"
+ "    module.exports = {\n"
+ "      property1: 'value1',\n"
+ "      property2: 999,\n"
+ "    };\n";

console.log(x.replace(/,\n\s+property2: 999,/, ''));

Answer №2

Employ the remove term.

module.exports = {
  featureA: 'data1',
  featureB: 123,
};
delete module.exports.featureB;

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