diff options
| -rw-r--r-- | package-lock.json | 41 | ||||
| -rw-r--r-- | src/unstated-next.tsx | 6 |
2 files changed, 34 insertions, 13 deletions
diff --git a/package-lock.json b/package-lock.json index 3a8de85..3f482fa 100644 --- a/package-lock.json +++ b/package-lock.json @@ -4126,7 +4126,8 @@ "ansi-regex": { "version": "2.1.1", "bundled": true, - "dev": true + "dev": true, + "optional": true }, "aproba": { "version": "1.2.0", @@ -4147,12 +4148,14 @@ "balanced-match": { "version": "1.0.0", "bundled": true, - "dev": true + "dev": true, + "optional": true }, "brace-expansion": { "version": "1.1.11", "bundled": true, "dev": true, + "optional": true, "requires": { "balanced-match": "^1.0.0", "concat-map": "0.0.1" @@ -4167,17 +4170,20 @@ "code-point-at": { "version": "1.1.0", "bundled": true, - "dev": true + "dev": true, + "optional": true }, "concat-map": { "version": "0.0.1", "bundled": true, - "dev": true + "dev": true, + "optional": true }, "console-control-strings": { "version": "1.1.0", "bundled": true, - "dev": true + "dev": true, + "optional": true }, "core-util-is": { "version": "1.0.2", @@ -4294,7 +4300,8 @@ "inherits": { "version": "2.0.3", "bundled": true, - "dev": true + "dev": true, + "optional": true }, "ini": { "version": "1.3.5", @@ -4306,6 +4313,7 @@ "version": "1.0.0", "bundled": true, "dev": true, + "optional": true, "requires": { "number-is-nan": "^1.0.0" } @@ -4320,6 +4328,7 @@ "version": "3.0.4", "bundled": true, "dev": true, + "optional": true, "requires": { "brace-expansion": "^1.1.7" } @@ -4327,12 +4336,14 @@ "minimist": { "version": "0.0.8", "bundled": true, - "dev": true + "dev": true, + "optional": true }, "minipass": { "version": "2.3.5", "bundled": true, "dev": true, + "optional": true, "requires": { "safe-buffer": "^5.1.2", "yallist": "^3.0.0" @@ -4351,6 +4362,7 @@ "version": "0.5.1", "bundled": true, "dev": true, + "optional": true, "requires": { "minimist": "0.0.8" } @@ -4431,7 +4443,8 @@ "number-is-nan": { "version": "1.0.1", "bundled": true, - "dev": true + "dev": true, + "optional": true }, "object-assign": { "version": "4.1.1", @@ -4443,6 +4456,7 @@ "version": "1.4.0", "bundled": true, "dev": true, + "optional": true, "requires": { "wrappy": "1" } @@ -4528,7 +4542,8 @@ "safe-buffer": { "version": "5.1.2", "bundled": true, - "dev": true + "dev": true, + "optional": true }, "safer-buffer": { "version": "2.1.2", @@ -4564,6 +4579,7 @@ "version": "1.0.2", "bundled": true, "dev": true, + "optional": true, "requires": { "code-point-at": "^1.0.0", "is-fullwidth-code-point": "^1.0.0", @@ -4583,6 +4599,7 @@ "version": "3.0.1", "bundled": true, "dev": true, + "optional": true, "requires": { "ansi-regex": "^2.0.0" } @@ -4626,12 +4643,14 @@ "wrappy": { "version": "1.0.2", "bundled": true, - "dev": true + "dev": true, + "optional": true }, "yallist": { "version": "3.0.3", "bundled": true, - "dev": true + "dev": true, + "optional": true } } }, diff --git a/src/unstated-next.tsx b/src/unstated-next.tsx index e30d205..5a28ba3 100644 --- a/src/unstated-next.tsx +++ b/src/unstated-next.tsx @@ -13,7 +13,8 @@ export interface Container<Value, State = void> { export function createContainer<Value, State = void>( useHook: (initialState?: State) => Value, ): Container<Value, State> { - let Context = React.createContext<Value | null>(null) + const EMPTY: unique symbol = Symbol() + let Context = React.createContext<Value | typeof EMPTY>(EMPTY) function Provider(props: ContainerProviderProps<State>) { let value = useHook(props.initialState) @@ -22,9 +23,10 @@ export function createContainer<Value, State = void>( function useContainer(): Value { let value = React.useContext(Context) - if (value === null) { + if (value === EMPTY) { throw new Error("Component must be wrapped with <Container.Provider>") } + // @ts-ignore return value } |