How to use the map function from traverse

Find comprehensive JavaScript traverse.map code examples handpicked from public code repositorys.

traverse.map is a utility function that recursively walks through an object or array and allows you to apply a function to each node of the data structure.

mutability.js

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    assert.deepEqual(res, { a : 1, b : 20, c : [ 3, 40 ] });
};


exports.mapT = function () {
    var obj = { a : 1, b : 2, c : [ 3, 4 ] };
    var res = Traverse.map(obj, function (x) {
        if (typeof x === 'number' && x % 2 === 0) {
            this.update(x * 10);
        }
    });

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How does traverse.map work?

traverse.map() is a method in the traverse library that recursively traverses and maps over an object or array, applying a transformation function to each value in the object or array and returning a new, transformed object or array. It operates in a depth-first manner, visiting all properties of an object or elements of an array, including nested objects and arrays.

Ai Example

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const traverse = require("traverse");

const data = {
  name: "John",
  age: 25,
  address: {
    street: "123 Main St",
    city: "Anytown",
    state: "CA",
  },
};

const newData = traverse(data).map(function (value) {
  if (typeof value === "string") {
    return value.toUpperCase();
  }
  return value;
});

console.log(newData);

In this example, traverse.map is used to traverse through each property of the data object and transform the string values to uppercase. The resulting newData object will have the same structure as the original data object, but with the string values in uppercase.

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