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vue-refried.ts
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vue-refried.ts
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import { ref as vueRef } from "vue";
import type { Ref } from "vue";
type Refried<T, N extends string> = {
[key in N]: T;
} & {
ref: Ref<T>;
};
export function refriedValue<T, N extends string>(
name: N,
initialValue: unknown = null
): Refried<T, N> {
const ref = vueRef<T>(initialValue as T);
const beans = { ref };
Object.defineProperty(beans, name, { get: () => ref.value });
return beans as unknown as Refried<T, N>;
}
export function refriedConstructedValue<T, N extends string>(
name: N,
cons: new (...args: unknown[]) => T,
initialValue?: unknown
): Refried<T, N> {
const ref = vueRef<InstanceType<typeof cons>>(initialValue as T);
const beans = { ref };
Object.defineProperty(beans, name, {
get: () => {
if (ref.value && !(ref.value instanceof cons)) {
throw new Error(
`Invalid ref value (expected: ${cons}, found: ${ref.value}).`
);
}
return ref.value;
},
});
return beans as unknown as Refried<T, N>;
}
export function refriedValidatedValue<T, N extends string>(
name: string,
validator: (value: unknown) => boolean,
initialValue?: unknown
): Refried<T, N> {
const ref = vueRef<T>(initialValue as T);
const beans = { ref };
Object.defineProperty(beans, name, {
get: () => {
if (!validator(ref.value)) {
throw new Error(
`Invalid ref value (validation failed for ${ref.value}).`
);
}
return ref.value;
},
});
return beans as unknown as Refried<T, N>;
}
export function refried<T, N extends string>(
name: N,
constructorOrValidator:
| null
| (new (...args: unknown[]) => T)
| ((value: unknown) => boolean) = null,
initialValue?: unknown
): Refried<T, N> {
const cv = constructorOrValidator;
type Constructor = new (...args: unknown[]) => T;
type Validator = (value: unknown) => boolean;
if (typeof cv === "function") {
if (cv.prototype?.constructor === cv) {
return refriedConstructedValue<T, N>(
name,
cv as Constructor,
initialValue
);
} else {
return refriedValidatedValue<T, N>(name, cv as Validator, initialValue);
}
} else {
return refriedValue<T, N>(name, initialValue);
}
}
export function refriedElement<T>(
constructorOrValidator:
| null
| (new (...args: unknown[]) => T)
| ((value: unknown) => boolean),
initialValue?: unknown
): Refried<T, "element"> {
return refried<T, "element">("element", constructorOrValidator, initialValue);
}