transform-object-keys

Install

$ npm install transform-object-keys

Usage

const transformObjectKeys = require('transform-object-keys');

// Convert an object
transformObjectKeys({'foo-bar': true});
//=> {fooBar: true}

// Convert an array of objects
transformObjectKeys([{'foo-bar': true}, {'bar-foo': false}]);
//=> [{fooBar: true}, {barFoo: false}]

transformObjectKeys({'foo-bar': true, nested: {unicorn_rainbow: true}}, {deep: true});
//=> {fooBar: true, nested: {unicornRainbow: true}}

transformObjectKeys({a_b: 1, a_c: {c_d: 1, c_e: {e_f: 1}}}, {deep: true, stopPaths: ['a_c.c_e']}),
//=> {aB: 1, aC: {cD: 1, cE: {e_f: 1}}}

// Convert object keys to pascal case
transformObjectKeys({'foo-bar': true, nested: {unicorn_rainbow: true}}, {deep: true, pascalCase: true});
//=> {FooBar: true, Nested: {UnicornRainbow: true}}

// Convert object keys to snake case
transformObjectKeys({'foo-bar': true, nested: {unicorn_rainbow: true}}, {deep: true, snakeCase: true});
//=> {FooBar: true, Nested: {UnicornRainbow: true}}

// Convert object keys using custom function
transformObjectKeys({'foo-bar': true, nested: {unicorn_rainbow: true}}, {deep: true, transform: key => key.toUppercase()});
//=> {FooBar: true, Nested: {UnicornRainbow: true}}

const transformObjectKeys = require('transform-object-keys');

const argv = require('minimist')(process.argv.slice(2));
//=> {_: [], 'foo-bar': true}

transformObjectKeys(argv);
//=> {_: [], fooBar: true}

API

transformObjectKeys(input, options?)

input

Type: object | object[]

An object or array of objects to camel-case.

options

Type: object

exclude

Type: Array<string | RegExp>
Default: []

Exclude keys from being camel-cased.

stopPaths

Type: string[]
Default: []

Exclude children at the given object paths in dot-notation from being camel-cased. For example, with an object like {a: {b: '🦄'}}, the object path to reach the unicorn is 'a.b'.

transformObjectKeys({
	a_b: 1,
	a_c: {
		c_d: 1,
		c_e: {
			e_f: 1
		}
	}
}, {
	deep: true,
	stopPaths: [
		'a_c.c_e'
	]
}),
/*
{
	aB: 1,
	aC: {
		cD: 1,
		cE: {
			e_f: 1
		}
	}
}
*/

deep

Type: boolean
Default: false

Recurse nested objects and objects in arrays.

pascalCase

Type: boolean
Default: false

Uppercase the first character as in bye-bye → ByeBye.

snakeCase

Type: boolean
Default: false

Uppercase the first character as in bye-bye → bye_bye.

transform

Type: (key: string) => string
Default: null

Transformation function to be used instead of default presets

Related

• snakecase-keys
• kebabcase-keys