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introduce TranslatedString type to require an string but exclude non-translated strings

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Sebastian 2023-01-04 15:45:38 -03:00
parent 590cda1dd3
commit 4da4a1b33e
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1 changed files with 12 additions and 9 deletions
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21
packages/taler-util/src/i18n.ts
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@ -10,7 +10,7 @@ export let jed: any = undefined;
* Set up jed library for internationalization,
* based on browser language settings.
*/
export function setupI18n(lang: string, strings: { [s: string]: any }): any {
export function setupI18n(lang: string, strings: { [s: string]: any }): void {
lang = lang.replace("_", "-");
if (!strings[lang]) {
@ -28,10 +28,13 @@ export function internalSetStrings(langStrings: any): void {
jed = new jedLib.Jed(langStrings);
}
declare const __translated: unique symbol;
export type TranslatedString = string & { [__translated]: true };
/**
* Convert template strings to a msgid
*/
function toI18nString(stringSeq: ReadonlyArray<string>): string {
function toI18nString(stringSeq: ReadonlyArray<string>): TranslatedString {
let s = "";
for (let i = 0; i < stringSeq.length; i++) {
s += stringSeq[i];
@ -39,7 +42,7 @@ function toI18nString(stringSeq: ReadonlyArray<string>): string {
s += `%${i + 1}$s`;
}
}
return s;
return s as TranslatedString;
}
/**
@ -48,7 +51,7 @@ function toI18nString(stringSeq: ReadonlyArray<string>): string {
export function singular(
stringSeq: TemplateStringsArray,
...values: any[]
): string {
): TranslatedString {
const s = toI18nString(stringSeq);
const tr = jed
.translate(s)
@ -63,10 +66,10 @@ export function singular(
export function translate(
stringSeq: TemplateStringsArray,
...values: any[]
): any[] {
): TranslatedString[] {
const s = toI18nString(stringSeq);
if (!s) return [];
const translation: string = jed.ngettext(s, s, 1);
const translation: TranslatedString = jed.ngettext(s, s, 1);
return replacePlaceholderWithValues(translation, values);
}
@ -83,7 +86,7 @@ export function Translate({
const c = [].concat(children);
const s = stringifyArray(c);
if (!s) return [];
const translation: string = jed.ngettext(s, s, 1);
const translation: TranslatedString = jed.ngettext(s, s, 1);
if (debug) {
console.log("looking for ", s, "got", translation);
}
@ -104,12 +107,12 @@ export function getJsonI18n<K extends string>(
export function getTranslatedArray(array: Array<any>) {
const s = stringifyArray(array);
const translation: string = jed.ngettext(s, s, 1);
const translation: TranslatedString = jed.ngettext(s, s, 1);
return replacePlaceholderWithValues(translation, array);
}
function replacePlaceholderWithValues(
translation: string,
translation: TranslatedString,
childArray: Array<any>,
): Array<any> {
const tr = translation.split(/%(\d+)\$s/);