React-ab-test-hooks NPM

react-ab-test-hooks

A fast and lightweight AB-Testing library for React and Next.js based on hooks and functional components. Full Typescript support and result caching is possible.

Install

yarn add react-ab-test-hooks

npm install --save react-ab-test-hooks

Basic Usage

A simple usage example for an AB-Test would be to pass each respective React Element/Component directly in the Experiment's variants. The experiment hook will then chose a winner and return it as Variant, which can then be used in your UI.

Per default the result is not cached, meaning on every new page load, the experiment is run again. You can enable caching by passing: cacheResult: true.

Per default the weight distribution is equal among all variants provided in the experiment. If you wan't to provide a custom probability distribution, you can do so via weights: [0.3, 0.7].

See further examples for more options.

import React from 'react'

import { useExperiment, useExperimentWrappers } from 'react-ab-test-hooks'

export const SimpleExample = () => {
  const { SelectedVariant } = useExperiment({
    id: 'experiment-1',
    variants: [
      { id: 'A', element: <div>Variant A won</div> },
      { id: 'B', element: <div>Variant B won</div> }
    ],
    onResult: (experimentId, selectedVariant) =>
      console.log(
        `Experiment ${experimentId} finished. Selected Variant ID: ${selectedVariant.id}`
      )
  })

  return (
    <div className='wrapper'>
      <SelectedVariant />
    </div>
  )
}

Generate variant wrapper components (+ result caching)

It's also possible to retrieve wrappers (as functional components) for each variant provided. In contrary to above example this would mean that in any case you will receive a wrapper for each variant and only the winning variant will actually render it's children. This can be convinient if you wanna render a more complex UI based on the experiment result. You can extract the Wrapper Components via array destructering.

NOTE: Only the children of the winning variant wrapper are rendered!

import React from 'react'

import { useExperiment, useExperimentWrappers } from 'react-ab-test-hooks'

export const WrapperExample = () => {
  const {
    wrappers: [VariantA, VariantB, VariantC] // Extract the wrapper components here
  } = useExperimentWrappers({
    id: 'experiment-2',
    variants: [{ id: 'A' }, { id: 'B' }, { id: 'C' }], // more than 2 variants are possible
    cacheResult: true,
    onResult: (experimentId, selectedVariant) =>
      console.log(
        `Experiment ${experimentId} finished. Selected Variant Wrapper ID: ${selectedVariant.id}`
      )
  })

  return (
    <div className='wrapper'>
      <VariantA>Variant A won experiment</VariantA>
      <VariantB>Variant B won experiment</VariantB>
      <VariantC>Variant C won experiment</VariantC>
    </div>
  )
}

With custom probability distribution

import React from 'react'

import { useExperiment, useExperimentWrappers } from 'react-ab-test-hooks'

export const CustomWeightsExample = () => {
  const { SelectedVariant } = useExperiment({
    id: 'experiment-3',
    variants: [
      { id: 'A', element: <div>Variant A won</div> },
      { id: 'B', element: <div>Variant B won</div> }
    ],
    weights: [0.3, 0.7], // Has to add up to 1.0 and has to have the same length as the variant array
    cacheResult: false,
    onResult: (experimentId, selectedVariant) =>
      console.log(
        `Experiment ${experimentId} finished. Selected Variant ID: ${selectedVariant.id}`
      )
  })

  return (
    <div className='wrapper'>
      <SelectedVariant />
    </div>
  )
}

Error handling example

import React from 'react'

import { useExperiment, useExperimentWrappers } from 'react-ab-test-hooks'

export const ErrorExample = () => {
  const { SelectedVariant, error } = useExperiment({
    id: 'experiment-4',
    variants: [
      { id: 'A', element: <div>Variant A won</div> },
      { id: 'B', element: <div>Variant B won</div> }
    ],
    weights: [0.3], // distribution incorrect -> returns error
    cacheResult: false,
    onResult: (experimentId, selectedVariant) =>
      console.log(
        `Experiment ${experimentId} finished. Selected Variant ID: ${selectedVariant.id}`
      )
  })

  if (error) {
    console.log(error)
    return null
  }

  return (
    <div className='wrapper'>
      <SelectedVariant />
    </div>
  )
}

Support

If you like this library it would be amazing if you would give it a star :)

License

MIT © NiklasMencke

API Documentation

Find the detailed API documentation attached.

Interfaces

react-ab-test-hooks / Exports / UseExperimentProps

Interface: UseExperimentProps

Hierarchy

ExperimentBaseProps
↳ UseExperimentProps

Properties

cacheResult

• Optional cacheResult: boolean

Optional: Boolean that indicates if the experiment result should be cached to the browsers local storage. This will ensure, that once an experiment is finished, the user will always sees the same variant. Example: true

Inherited from: void

Defined in: index.tsx:23

id

• id: string

Experiment ID. Example: 'experiment-1'

Inherited from: void

Defined in: index.tsx:19

onResult

• Optional onResult: (experimentId: string, selectedVariant: Variant | VariantWrapper) => null | void

Optional: Callback function that is called when the experiment has been finished and a variant was selected.

Type declaration:

▸ (experimentId: string, selectedVariant: Variant | VariantWrapper): null | void

Parameters:

Name	Type
`experimentId`	string
`selectedVariant`	Variant \| VariantWrapper

Returns: null | void

Defined in: index.tsx:25

Inherited from: void

Defined in: index.tsx:25

variants

• variants: Variant[]

An array of variants. Has to contain at least two items

Defined in: index.tsx:30

weights

• Optional weights: number[]

Optional: Weight distribution as a number array. Has to match the length of the variant array. Defaults to equal distribution. E.g. 0.5, 0.5

Inherited from: void

Defined in: index.tsx:21

react-ab-test-hooks / Exports / UseExperimentResponse

Interface: UseExperimentResponse

Properties

SelectedVariant

• SelectedVariant: FC<{}>

The selected variant that won the experiment and was chosen from the previously passed variants.

Defined in: index.tsx:56

error

• Optional error: null | string

Error string that is filled in case something breaks

Defined in: index.tsx:60

onResult

• Optional onResult: (experimentId: string, selectedVariant: Variant) => null | void

Callback function that is called when the experiment has been finished and a variant was selected.

Type declaration:

▸ (experimentId: string, selectedVariant: Variant): null | void

Parameters:

Name	Type
`experimentId`	string
`selectedVariant`	Variant

Returns: null | void

Defined in: index.tsx:58

react-ab-test-hooks / Exports / UseExperimentWrapperProps

Interface: UseExperimentWrapperProps

Hierarchy

ExperimentBaseProps
↳ UseExperimentWrapperProps

Properties

cacheResult

• Optional cacheResult: boolean

Inherited from: void

Defined in: index.tsx:23

id

• id: string

Experiment ID. Example: 'experiment-1'

Inherited from: void

Defined in: index.tsx:19

onResult

• Optional onResult: (experimentId: string, selectedVariant: Variant | VariantWrapper) => null | void

Optional: Callback function that is called when the experiment has been finished and a variant was selected.

Type declaration:

▸ (experimentId: string, selectedVariant: Variant | VariantWrapper): null | void

Parameters:

Name	Type
`experimentId`	string
`selectedVariant`	Variant \| VariantWrapper

Returns: null | void

Defined in: index.tsx:25

Inherited from: void

Defined in: index.tsx:25

variants

• variants: VariantWrapper[]

An array of variants. Has to contain at least two items. The element attribute is left out here.

Defined in: index.tsx:35

weights

• Optional weights: number[]

Optional: Weight distribution as a number array. Has to match the length of the variant array. Defaults to equal distribution. E.g. 0.5, 0.5

Inherited from: void

Defined in: index.tsx:21

react-ab-test-hooks / Exports / UseExperimentWrapperResponse

Interface: UseExperimentWrapperResponse

Properties

error

• Optional error: null | string

Error string that is filled in case something breaks

Defined in: index.tsx:51

onResult

• Optional onResult: (experimentId: string, selectedVariantId: VariantWrapper) => null | void

Callback function that is called when the experiment has been finished and a variant was selected.

Type declaration:

▸ (experimentId: string, selectedVariantId: VariantWrapper): null | void

Parameters:

Name	Type
`experimentId`	string
`selectedVariantId`	VariantWrapper

Returns: null | void

Defined in: index.tsx:49

wrappers

• wrappers: FC<{}>[]

An array containing a wrapper component for each of the previously passed variants. Only the Variant Wrapper that won will render it's children.

Defined in: index.tsx:47

react-ab-test-hooks / Exports / UseVariantProps

Interface: UseVariantProps

Hierarchy

ExperimentBaseProps
↳ UseVariantProps

Properties

cacheResult

• Optional cacheResult: boolean

Inherited from: void

Defined in: index.tsx:23

id

• id: string

Experiment ID. Example: 'experiment-1'

Inherited from: void

Defined in: index.tsx:19

onResult

• Optional onResult: (experimentId: string, selectedVariant: Variant | VariantWrapper) => null | void

Optional: Callback function that is called when the experiment has been finished and a variant was selected.

Type declaration:

▸ (experimentId: string, selectedVariant: Variant | VariantWrapper): null | void

Parameters:

Name	Type
`experimentId`	string
`selectedVariant`	Variant \| VariantWrapper

Returns: null | void

Defined in: index.tsx:25

Inherited from: void

Defined in: index.tsx:25

type

• type: standard | wrapper

The type of variant. 'wrapper' will result in returning wrapper components for each variant of the experiment. Example: 'standard'

Defined in: index.tsx:42

variants

• variants: (Variant | VariantWrapper)[]

An array of variants

Defined in: index.tsx:40

weights

• Optional weights: number[]

Optional: Weight distribution as a number array. Has to match the length of the variant array. Defaults to equal distribution. E.g. 0.5, 0.5

Inherited from: void

Defined in: index.tsx:21

react-ab-test-hooks / Exports / Variant

Interface: Variant

Properties

element

• element: any

React Node to render if this variant succeeds. Can be a React Component or HTML. Example: Variant A

Defined in: index.tsx:9

id

• id: string

Variant ID. Example: 'variant-a'

Defined in: index.tsx:7

react-ab-test-hooks / Exports / VariantWrapper

Interface: VariantWrapper

Properties

id

• id: string

Variant ID. Example: 'variant-a'

Defined in: index.tsx:14

react-ab-test-hooks / Exports

react-ab-test-hooks

Interfaces

Functions

useExperiment

▸ ConstuseExperiment(__namedParameters: UseExperimentProps): UseExperimentResponse

A hook that takes an AB-Test experiment configuration and choses a variant that won the experiment based on a probability distribution. The probably distribution can be defined in the weights array (e.g 0.1, 0.9). It defaults to an even distribution. it will return the variant (as a React Element) that won the given experiment.

Parameters:

Name	Type
`__namedParameters`	UseExperimentProps

Returns: UseExperimentResponse

The Variant component that won the experiment.

Defined in: index.tsx:194

useExperimentWrappers

▸ ConstuseExperimentWrappers(__namedParameters: UseExperimentWrapperProps): UseExperimentWrapperResponse

A hook that takes an AB-Test experiment configuration and choses a variant that won the experiment based on a probability distribution. The probably distribution can be defined in the weights array (e.g 0.1, 0.9). It defaults to an even distribution. it will return wrapper components for each variant provided in the variants parameter in props. Only the wrapper for the variant that won the experiment will display its children.

Parameters:

Name	Type
`__namedParameters`	UseExperimentWrapperProps

Returns: UseExperimentWrapperResponse

An array containing wrapper components for each variant provided in this experiment.

Defined in: index.tsx:222

@infinitebrahmanuniverse/nolb-react-ab @everything-registry/sub-chunk-2538

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3 years ago

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react-ab-test-hooks

Install

Basic Usage

Generate variant wrapper components (+ result caching)

With custom probability distribution

Error handling example

Support

License

API Documentation

Interfaces

Interface: UseExperimentProps

Hierarchy

Table of contents

Properties

Properties

cacheResult

id

onResult

Type declaration:

Parameters:

variants

weights

Interface: UseExperimentResponse

Table of contents

Properties

Properties

SelectedVariant

error

onResult

Type declaration:

Parameters:

Interface: UseExperimentWrapperProps

Hierarchy

Table of contents

Properties

Properties

cacheResult

id

onResult

Type declaration:

Parameters:

variants

weights

Interface: UseExperimentWrapperResponse

Table of contents

Properties

Properties

error

onResult

Type declaration:

Parameters:

wrappers

Interface: UseVariantProps

Hierarchy

Table of contents

Properties

Properties

cacheResult

id

onResult

Type declaration:

Parameters:

type

variants

weights

Interface: Variant

Table of contents

Properties

Properties

element

id

Interface: VariantWrapper

Table of contents

Properties

Properties

id

react-ab-test-hooks

Table of contents

Interfaces

Functions