https://github.com/ng-alain/delon/blob/master/packages/theme/src/services/i18n/i18n.ts
- interface AlainI18NService
- abstract class AlainI18nBaseService implements AlainI18NService
- class AlainI18NServiceFake
支持占位符的定制，默认使用 {{ }}，可以通过 AlainConfigService 的 interpolation 进行定制。使用了其中的 'themeI18n' 部分的定义
提供了一个 flatData() 可以将层次嵌套的结构平铺为单层的对象结构。
/**
* Flattened data source
*
* @example
* {
* "name": "Name",
* "sys": {
* "": "System",
* "title": "Title"
* }
* }
* =>
* {
* "name": "Name",
* "sys": "System",
* "sys.title": "Title"
* }
*/
flatData(data: Record<string, unknown>, parentKey: string[]): Record<string, string> {
const res: Record<string, string> = {};
for (const key of Object.keys(data)) {
const value = data[key];
if (typeof value === 'object') {
const child = this.flatData(value as Record<string, unknown>, parentKey.concat(key));
Object.keys(child).forEach(childKey => (res[childKey] = child[childKey]));
} else {
res[(key ? parentKey.concat(key) : parentKey).join('.')] = `${value}`;
}
}
return res;
}