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42 lines
1.4 KiB
TypeScript
42 lines
1.4 KiB
TypeScript
/*
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Copyright 2022 New Vector Ltd
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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import i18n from "i18next";
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/**
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* An error with messages in both English and the user's preferred language.
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*/
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// Abstract to force consumers to use the function below rather than calling the
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// constructor directly
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export abstract class TranslatedError extends Error {
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/**
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* The error message in the user's preferred language.
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*/
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public readonly translatedMessage: string;
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public constructor(messageKey: string, translationFn: typeof i18n.t) {
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super(translationFn(messageKey, { lng: "en-GB" }));
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this.translatedMessage = translationFn(messageKey);
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}
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}
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class TranslatedErrorImpl extends TranslatedError {}
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// i18next-parser can't detect calls to a constructor, so we expose a bare
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// function instead
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export const translatedError = (messageKey: string, t: typeof i18n.t) =>
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new TranslatedErrorImpl(messageKey, t);
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