Javascript 角度i18n定位不使用管道平移插值

我正在尝试翻译一个HTML元素

<button i18n="Bouton Fermer majuscule@@infos-dataset-4" mat-button
    class="mat-raised-button mat-primary button-bottom button-cancel" (click)="close()">
  {{ 'Fermer' | uppercase }}
</button>

{{'Fermer'|大写}}

我得到这个翻译输出

<trans-unit id="infos-dataset-4" datatype="html">
  <source> <x id="INTERPOLATION" equiv-text="    {{ &apos;Fermer&apos; | uppercas"/> </source>       <context-group purpose="location">
    <context context-type="sourcefile">src/app/business/history-modal/history-modal.component.html</context>
    <context context-type="linenumber">81,83</context>
  </context-group>
  <context-group purpose="location">
    <context context-type="sourcefile">src/app/business/import-details/infos-dataset/infos-dataset.component.html</context>
    <context context-type="linenumber">88,90</context>
  </context-group>
  <note priority="1" from="description">Bouton Fermer majuscule</note>
</trans-unit>

src/app/business/history modal/history-modal.component.html
81,83
src/app/business/import-details/infos-dataset.component.html
88,90
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然后我在我的.en文件中翻译它

  <trans-unit id="infos-dataset-4" datatype="html">
    <source> <x id="INTERPOLATION" equiv-text="    {{ &apos;Fermer&apos; | uppercas"/> </source>
    <target> <x id="INTERPOLATION" equiv-text="    {{ &apos;Close&apos; | uppercas"/> </target>
    <context-group purpose="location">
      <context context-type="sourcefile">src/app/business/history-modal/history-modal.component.html</context>
      <context context-type="linenumber">81,83</context>
    </context-group>
    <context-group purpose="location">
      <context context-type="sourcefile">src/app/business/import-details/infos-dataset/infos-dataset.component.html</context>
      <context context-type="linenumber">86,88</context>
    </context-group>
    <note priority="1" from="description">Bouton Fermer majuscule</note>
  </trans-unit>

src/app/business/history modal/history-modal.component.html
81,83
src/app/business/import-details/infos-dataset.component.html
86,88
布顿费尔默大酒店

我没有在我的组件中应用翻译（配置设置为“en”的ng serve）

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知道为什么吗？

我觉得trans输出错误。你用的是什么版本的Angular？在这方面，我看到了一些错误：