username.ts
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username.ts
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	import type Context from "../../../context";
	import { Field } from "../../../main";

	import me_synonyms from "../../../misc/me-synonyms";
	import TextStorage from "./text-storage";

	export default class Username extends TextStorage {
	typeName = "username";

	async isProperValue(
	context: Context,
	new_value: string,
	old_value: string
	) {
	if (old_value === new_value) {
	return Field.valid();
	}
	if (me_synonyms.indexOf(new_value) !== -1) {
	return Field.invalid(
	context.app.i18n("invalid_username", [new_value])
	);
	}

	const response = await this.app.collections.users
	.suList()
	.filter({ username: new_value })
	.fetch();

	if (!response.empty) {
	return Field.invalid(context.app.i18n("username_taken"));
	}
	return Field.valid();
	}
	}