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@jumpn/utils-composite

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Readme

@jumpn/utils-composite

Composite utilities (immutability, fp helpers)

NOTE: All the functions described in API are curried

Types

type Composite = Array<*> | Object;

type Key = number | string;

type Path = Array<Key>;

API

get

Get property value of given key.

Parameters

key Key
composite Composite

getIn

Returns value located at the given path or undefined otherwise.

Parameters

path Path
composite Composite

getKeys

Get own enumerable keys.

Parameters

composite Composite

Returns Array<Key>

hasIn

Returns true if value located at given path is strictly equal to the one specified.

Parameters

path Path
value any
composite Composite

hasKey

Returns true if key is included in composite's own enumerable ones, or false otherwise.

Parameters

key Key
composite Composite

haveSameProps

Returns true if both composites have the same props or false otherwise.

Parameters

c1 Composite
c2 Composite

remove

Returns a new composite with the result of having removed the property with the given key.

Parameters

key Key
composite Composite

removeIn

Returns a new composite with the result of having removed the property located at the given path.

(This does the same as calling updateIn with updater: () => updateIn.remove)

Parameters

path Path
composite Composite

set

Returns a new composite with the result of having updated the property with the given key with the specified value.

Parameters

key Key
value any
composite Composite

setIn

Returns a new composite with the result of having updated the property located at the given path with the specified value.

(This does the same as calling updateIn with updater: () => value)

Parameters

path Path
value any
composite Composite

shallowCopy

Returns a new composite with the same own enumerable props of the one given.

Parameters

composite Composite

shallowEqual

Returns true if both composites are of the same type (Array or Object) and their properties are strictly equal.

Parameters

c1 Composite
c2 Composite

updateIn

Returns a new composite with the result of having updated the property value at the given path with the result of the call to updater function.

Entry removal is supported by returning updateIn.remove symbol on updater function.

Parameters

path Path
updater function (prev: any): any
composite Composite