33 lines
659 B
TypeScript
33 lines
659 B
TypeScript
import { Context } from 'cafy';
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export class ID<Maybe = string> extends Context<string | (Maybe extends {} ? string : Maybe)> {
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public readonly name = 'ID';
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constructor(optional = false, nullable = false) {
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super(optional, nullable);
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this.push((v: any) => {
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if (typeof v !== 'string') {
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return new Error('must-be-an-id');
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}
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return true;
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});
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}
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public getType() {
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return super.getType('String');
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}
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public makeOptional(): ID<undefined> {
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return new ID(true, false);
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}
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public makeNullable(): ID<null> {
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return new ID(false, true);
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}
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public makeOptionalNullable(): ID<undefined | null> {
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return new ID(true, true);
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}
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}
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