simple-form-field.ts
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simple-form-field.ts
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	import { FieldParseResult, FormField } from "./field";
	import { FormDataValue } from "../form";
	import { Context } from "koa";
	import { predicates } from "@sealcode/ts-predicates";

	export class SimpleFormField<Required extends boolean> extends FormField<
	Required,
	string \| null
	> {
	async parse(
	_: Context,
	raw_value: FormDataValue
	): Promise<FieldParseResult<string>> {
	return {
	parsed_value: (raw_value \|\| "").toString(),
	parsable: true,
	error: null,
	};
	}

	predicate = predicates.string;

	public getEmptyValue(): string {
	return "";
	}

	constructor(required: Required) {
	super(required);
	}
	}