/
localTypes.ts
140 lines (129 loc) · 5.6 KB
/
localTypes.ts
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import { getSlotsPropertyName, getVueLibraryName } from '@volar/vue-code-gen';
export const typesFileName = '__VLS_types.ts';
export function getTypesCode(vueVersion: number) {
const libName = getVueLibraryName(vueVersion);
const slots = getSlotsPropertyName(vueVersion);
return `
import * as vue from '${libName}';
import type {
FunctionalComponent,
EmitsOptions,
DefineComponent,
SetupContext,
ObjectDirective,
FunctionDirective,
} from '${libName}';
type IsAny<T> = boolean extends (T extends never ? true : false) ? true : false;
export type PickNotAny<A, B> = IsAny<A> extends true ? B : A;
type AnyArray<T = any> = T[] | readonly T[];
type ForableSource<T> = [
T extends { [Symbol.iterator](): IterableIterator<infer T1> } ? T1 : T[keyof T], // item
typeof Symbol.iterator extends keyof T ? number : T extends T ? keyof T : never, // key
typeof Symbol.iterator extends keyof T ? undefined : number, // index
][];
export type GlobalComponents =
PickNotAny<import('vue').GlobalComponents, {}>
& PickNotAny<import('@vue/runtime-core').GlobalComponents, {}>
& Pick<typeof vue,
'Transition'
| 'TransitionGroup'
| 'KeepAlive'
| 'Suspense'
| 'Teleport'
>;
export declare function getVforSourceType<T>(source: T): ForableSource<NonNullable<T extends number ? number[] : T extends string ? string[] : T>>;
export declare function getNameOption<T>(t?: T): T extends { name: infer N } ? N : undefined;
export declare function directiveFunction<T>(dir: T):
T extends ObjectDirective<infer E, infer V> ? undefined extends V ? (value?: V) => void : (value: V) => void
: T extends FunctionDirective<infer E, infer V> ? undefined extends V ? (value?: V) => void : (value: V) => void
: T;
export declare function withScope<T, K>(ctx: T, scope: K): ctx is T & K;
export declare function makeOptional<T>(t: T): { [K in keyof T]?: T[K] };
export type ExtractComponentSlots<T> =
IsAny<T> extends true ? Record<string, any>
: T extends { ${slots}?: infer S } ? { [K in keyof S]-?: S[K] extends ((obj: infer O) => any) | undefined ? O : S[K] }
: Record<string, any>;
export type FillingEventArg_ParametersLength<E extends (...args: any) => any> = IsAny<Parameters<E>> extends true ? -1 : Parameters<E>['length'];
export type FillingEventArg<E> = E extends (...args: any) => any ? FillingEventArg_ParametersLength<E> extends 0 ? ($event?: undefined) => ReturnType<E> : E : E;
export type ExtractEmit2<T> =
T extends FunctionalComponent<infer _, infer E> ? SetupContext<E>['emit']
: T extends new (...args: any) => { $emit: infer Emit } ? Emit
: unknown;
export type ReturnVoid<T> = T extends (...payload: infer P) => any ? (...payload: P) => void : (...args: any) => void;
export type EmitEvent2<F, E> =
F extends {
(event: E, ...payload: infer P): infer R
} ? (...payload: P) => void
: F extends {
(event: E, ...payload: infer P): infer R
(...args: any): any
} ? (...payload: P) => void
: F extends {
(event: E, ...payload: infer P): infer R
(...args: any): any
(...args: any): any
} ? (...payload: P) => void
: F extends {
(event: E, ...payload: infer P): infer R
(...args: any): any
(...args: any): any
(...args: any): any
} ? (...payload: P) => void
: unknown | '[Type Warning] Volar could not infer $emit event more than 4 overloads without DefineComponent. see https://github.com/johnsoncodehk/volar/issues/60';
export type EmitEvent<T, E> =
T extends DefineComponent<infer _, any, any, any, any, any, any, infer E2> ? EmitEvent_3<E2, E>
: T extends FunctionalComponent<infer _, infer E2> ? EmitEvent_3<E2, E>
: T extends FunctionalComponent<infer _, infer E> ? EmitEvent2<SetupContext<E>['emit'], E>
: unknown;
export type EmitEvent_3<E2, E> =
EmitsOptions extends E2 ? unknown
: E2 extends AnyArray<infer K> ? (E extends K ? (...args: any) => void : unknown) // emits: ['event-1', 'event-2']
: E extends keyof E2 ? ReturnVoid<E2[E]> // emits: { 'event-1': () => true, 'event-2': () => true }
: unknown
export type FirstFunction<F0 = void, F1 = void, F2 = void, F3 = void, F4 = void> =
NonNullable<F0> extends (Function | AnyArray<Function>) ? F0 :
NonNullable<F1> extends (Function | AnyArray<Function>) ? F1 :
NonNullable<F2> extends (Function | AnyArray<Function>) ? F2 :
NonNullable<F3> extends (Function | AnyArray<Function>) ? F3 :
NonNullable<F4> extends (Function | AnyArray<Function>) ? F4 :
unknown;
export type GlobalAttrs = JSX.IntrinsicElements['div'];
export type SelfComponent<N, C> = string extends N ? {} : N extends string ? { [P in N]: C } : {};
export type PickComponents<T> = ComponentKeys<T> extends keyof T ? Pick<T, ComponentKeys<T>> : T;
export type ConvertInvalidJsxElement<T> = IsComponent<T> extends true ? T : any;
type IsComponent<T> =
T extends (...args: any) => JSX.Element ? true
: T extends new (...args: any) => JSX.ElementClass ? true
: false;
type ComponentKeys<T> = keyof { [K in keyof T as IsComponent<T[K]> extends true ? K : never]: any };
`;
}
// TODO: not working for overloads > n (n = 8)
// see: https://github.com/johnsoncodehk/volar/issues/60
export function genConstructorOverloads(name = 'ConstructorOverloads', nums?: number) {
let code = `type ${name}<T> =\n`;
if (nums === undefined) {
for (let i = 8; i >= 1; i--) {
gen(i);
}
}
else {
gen(nums);
}
code += `// 0\n`;
code += `{};\n`;
return code;
function gen(i: number) {
code += `// ${i}\n`;
code += `T extends {\n`;
for (let j = 1; j <= i; j++) {
code += `(event: infer E${j}, ...payload: infer P${j}): void;\n`;
}
code += `} ? (\n`;
for (let j = 1; j <= i; j++) {
if (j > 1) code += '& ';
code += `(E${j} extends string ? { [K${j} in E${j}]: (...payload: P${j}) => void } : {})\n`;
}
code += `) :\n`;
}
}