Package Exports
- mutative
- mutative/lib/index.js
This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (mutative) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.
Readme
mutative
Efficient creation of immutable state
APIs
create()
const baseState = {
foo: 'bar',
list: [{ text: 'todo' }],
};
const state = create(baseState, (draft) => {
draft.foo = 'foobar';
draft.list.push({ text: 'learning' });
});apply()
const baseState = {
foo: 'bar',
list: [{ text: 'todo' }],
};
const [state, patches, inversePatches] = create(
baseState,
(draft) => {
draft.foo = 'foobar';
draft.list.push({ text: 'learning' });
},
{
enablePatches: true,
}
);
const nextState = apply(baseState, patches);
expect(nextState).toEqual(state);
const prevState = apply(state, inversePatches);
expect(prevState).toEqual(baseState);current()
const baseState = {
foo: 'bar',
list: [{ text: 'todo' }],
};
const state = create(baseState, (draft) => {
draft.foo = 'foobar';
draft.list.push({ text: 'learning' });
expect(current(draft.list)).toEqual([{ text: 'todo' }, { text: 'learning' }]);
});original()
const baseState = {
foo: 'bar',
list: [{ text: 'todo' }],
};
const state = create(baseState, (draft) => {
draft.foo = 'foobar';
draft.list.push({ text: 'learning' });
expect(original(draft.list)).toEqual([{ text: 'todo' }]);
});isDraft()unsafe()castDraft()castImmutable()Mutable<T>Immutable<T>PatchesPatch