mobx-keystone

    Interface Context<T>

    A context.

    interface Context<T> {
        apply<R>(fn: () => R, value: T): R;
        applyComputed<R>(fn: () => R, valueFn: () => T): R;
        get(node: object): T;
        getDefault(): T;
        getProviderNode(node: object): undefined | object;
        set(node: object, value: T): void;
        setComputed(node: object, valueFn: () => T): void;
        setDefault(value: T): void;
        setDefaultComputed(valueFn: () => T): void;
        unset(node: object): void;
    }

    Type Parameters

    • T
    Index

    Methods

    apply applyComputed get getDefault getProviderNode set setComputed setDefault setDefaultComputed unset

    Methods

    • Applies a value override while the given function is running and, if a node is returned, sets the node as a provider of the value.

      Type Parameters

      • R

      Parameters

      • fn: () => R

        Function to run.

      • value: T

        Value to apply.

      Returns R

      The value returned from the function.

    • Applies a computed value override while the given function is running and, if a node is returned, sets the node as a provider of the computed value.

      Type Parameters

      • R

      Parameters

      • fn: () => R

        Function to run.

      • valueFn: () => T

        Function that returns the value to apply.

      Returns R

      The value returned from the function.

    • Gets the context value for a given node.

      Parameters

      • node: object

      Returns T

    • Gets the context default value.

      Returns T

    • Gets node that will provide the context value, or undefined if it comes from the default.

      Parameters

      • node: object

      Returns undefined | object

    • Sets the context value for a given node, effectively making it a provider.

      Parameters

      • node: object
      • value: T

      Returns void

    • Sets the context value resolver for a given node, effectively making it a provider.

      Parameters

      • node: object
      • valueFn: () => T

      Returns void

    • Sets the context default value.

      Parameters

      • value: T

      Returns void

    • Sets the context default value resolver.

      Parameters

      • valueFn: () => T

      Returns void

    • Unsets the context value for a given node, therefore it won't be a provider anymore.

      Parameters

      • node: object

      Returns void

    Settings

    Member Visibility

    On This Page

    Methods
    MMNEPVFCICPMFPCPTTAAATR