how to use the unset function from the lodash library in typescript

To use the unset function from the Lodash library in TypeScript, you can follow the following steps:

  1. First, you need to install the Lodash library using npm. You can run the following command in your terminal to install Lodash:

    index.ts
    npm install lodash
    
    19 chars
    2 lines
  2. After installing the Lodash library, you can import the unset function and use it in your TypeScript code. Here's an example:

    index.ts
    import * as _ from "lodash";
    
    const obj = {
      a: [
        {
          b: {
            c: 1
          }
        }
      ]
    };
    
    _.unset(obj, "a[0].b.c");
    
    console.log(obj); // Output: { a: [ { b: {} } ] }
    
    180 chars
    16 lines

    In this code, we imported the Lodash library using the import * as _ from "lodash" statement. Then, we defined an object obj with a nested structure. We used the unset function of Lodash to remove the c property from the b object. Finally, we logged the modified object to the console.

    Note that we used the string "a[0].b.c" as the path argument to the unset function to indicate the property we want to remove. The path can use dot notation for object properties and bracket notation for array indexes.

    Additionally, if you want to use the unset function with arrays, you can specify the path with the array index as shown below:

    index.ts
    const arr = [
      {
        a: {
          b: 1
        }
      }
    ];
    
    _.unset(arr, "[0].a.b");
    
    console.log(arr); // Output: [ { a: {} } ]
    
    121 chars
    12 lines

gistlibby LogSnag