Convert Vuejs Typescript Options to Composition Api 中的奇怪问题

Question

问题已解决，请通读问题，了解如何逐步解决问题

我阅读了有关组合 api(https://vue-composition-api-rfc.netlify.com/#api-introduction) 的信息，并尝试转换我现有的代码，该代码基于 vuejs 中 Option api 上的 typescript，但我未能使其工作，并且对组合 api 如何真正工作感到困惑。

我的工作代码如下：

<script lang="ts">
  import Vue from "vue";
  import {inputFields} from "@/mixins/inputField/inputField";
  import VuePersianDatetimePicker from "vue-persian-datetime-picker"
  import {util_timestampz_formatter, util_timestampz_now} from "@/utils/commonUtility";
  import {InputFieldHelper} from "@/mixins/Helpers/FormGeneratorInputFieldHelper/InputField.Helper.mixin";

  export default Vue.extend({
    name: "DateTimePicker",
    props: ['instance', "value", "formSection", "isEnable"],
    components: {
      datePicker: VuePersianDatetimePicker
    },
    data() {
      return {
        inputField: new InputFieldHelper(this.value, this.instance, this.formSection, this.isEnable)
      }
    },
    mounted() {
      //@ts-ignore
      this.instance.min = util_timestampz_now();
    },
    methods: {
      updateValue() {
        let new_data = this.inputField.updateValue();
        new_data ? this.$emit("updateValue", new_data) : "";
      },
      updateDateTime(time: string) {
        //@ts-ignore
        this.inputField.inputValue = util_timestampz_formatter(this.inputField.inputValue);
        //@ts-ignore
        this.updateValue();
      },
    }
  });
</script>

composition api 中转换后的版本低于运行不正常的版本：

<script lang="ts">
  import Vue from "vue";
  import {reactive, createComponent, onMounted} from "@vue/composition-api";
  import VuePersianDatetimePicker from "vue-persian-datetime-picker"
  import {util_timestampz_formatter, util_timestampz_now} from "@/utils/commonUtility";
  import {InputFieldHelper} from "@/mixins/Helpers/FormGeneratorInputFieldHelper/InputField.Helper.mixin";
  import {FormGeneratorInputField} from "@/types";

  export default createComponent({
    name: "DateTimePicker",
    props: {
      instance,
      value,
      formSection,
      isEnable,
    },
    components: {
      datePicker: VuePersianDatetimePicker
    },
    setup(props, context) {
      const inputField = reactive(new InputFieldHelper(props.value, props.instance, props.formSection, props.isEnable));
      onMounted(() => {
        props.instance.min = util_timestampz_now();
      });
      const updateValue = () => {
        let new_data = inputField.updateValue();
        new_data ? context.$emit("updateValue", new_data) : "";
      };
      const updateDateTime = (time: string) => {
        inputField.inputValue = util_timestampz_formatter(inputField.inputValue);
        updateValue();
      };
      return {
        inputField, updateValue, updateDateTime
      }
    }
  });
</script>

哪个 webstorm 显示 3 错误：

有没有办法正确解决这个问题？

..................

更新1：

我在使用 props 时犯了错误（我以为我是新的 vue，它不需要类型，它会自动从父组件的 typescript 中获取它）。多亏了古问题，问题已经解决并得到解决。

对于在获取道具类型错误时遇到类似问题的任何人，如下图所示

感谢https://frontendsociety.com/using-a-typescript-interfaces-and-types-as-a-prop-type-in-vuejs-508ab3f83480，您可以将创建的类型接口作为如下函数传递：

但仍有一些问题需要解决，如下所示：

1.当我删除反应性时，反应性似乎无法正常工作，并且在模板中显示“未解析的变量或缺少导入语句”

......................

update2分享道具和使用合成功能：

对我来说，在将基于选项的 api 转换为组合 api 之后，它似乎比新的更好，这要归功于古和 Maximilian shrwazmuller（我强烈建议观看这个免费视频：https://www.youtube.com/watch?v=V-xK3sbc7xI）和谷歌搜索与https://vue-composition-api-rfc.netlify.com/api.html#template-refs 苦苦挣扎，我将代码重写为如下所示：

<script lang="ts">
  import {createComponent, onMounted} from "@vue/composition-api";
  import VuePersianDatetimePicker from "vue-persian-datetime-picker"
  import {util_timestampz_formatter, util_timestampz_now} from "@/utils/commonUtility";
  import {
    useInputFieldComposition,
    inputFieldProps
  } from "@/mixins/Helpers/FormGeneratorInputFieldHelper/inputField.composition";
  import {ComponentPropsOptions} from "@vue/composition-api/dist/component/componentProps";

  export default createComponent({
    name: "DateTimePicker",
    props: inputFieldProps as ComponentPropsOptions,
    components: {
      datePicker: VuePersianDatetimePicker
    },
    setup(props, context) {
      const {inputField, updateValue} = useInputFieldComposition(props, context);
      onMounted(() => {
        props.instance.min = util_timestampz_now();
      });
      const updateDateTime = (time: string) => {
        inputField.inputValue = util_timestampz_formatter(inputField.inputValue);
        updateValue();
      };
      return {
        inputField, updateValue, updateDateTime
      }
    }
  });
</script>

如您所见，它非常简洁，因为组件之间共享的所有内容都在另一个文件中（命名为：inputFiled.compositons），如下所示：

//inputField.composition.ts
import {PropType, reactive} from "@vue/composition-api";
import {FormGeneratorInputField} from "@/types";
import {InputFieldHelper} from "@/mixins/Helpers/FormGeneratorInputFieldHelper/InputField.Helper.mixin";

export const inputFieldProps = {
  instance: {
    type: Object as PropType<FormGeneratorInputField>,
    required: true
  },
  value: {
    type: Object,
    required: true
  },
  formSection: {
    type: String,
    required: true
  },
  isEnable: {
    type: Boolean,
    required: true
  },
};
export const useInputFieldComposition = (props: any, context: any) => {
  let inputField  = reactive(new InputFieldHelper(props.value, props.instance, props.formSection, props.isEnable));
  const updateValue = (): any => {
    let new_data = inputField.passInfoMixedValue();
    new_data ? context.emit("updateValue", new_data) : "";
    return new_data;
  };

  return {
    props, inputField, updateValue
  }

正如您所见，通过此功能，我们可以充分发挥打字稿的潜力。

最后我应该告诉你，如果你遵循路径并使用 vue-composition api，你的项目将完美运行，但 webstorm 会向你显示一些关于模板中特定代码的警告，比如未解析的变量。这些新的语法支持正在开发中，您可以在本期中看到 https://youtrack.jetbrains.com/issue/WEB-41565 所以不要担心它并使用它。

Answer 1

阅读documentation on props。这是一个例子：

    props: {
      instance: {
        type: Object,
        required: true
      },
      value: {
        type: Object,
        required: true
      },
      formSection: {
        type: Object,
        required: true
      },
      isEnable: {
        type: Boolean,
        required: false
      },
    },

为了启用更好的类型，可以使用PropType：

import { PropType } from "@vue/composition-api/dist/component/componentProps";
// …

    props: {
      instance: {
        type: Object as PropType<FormGeneratorInputField>,
        required: true
      },
      // …

要发出事件，请遵循错误消息中的建议：context.emit("updateValue")。

关于InputFieldHelper的实例，我建议重构这个类的实现：

class InputFieldHelper {
  readonly inputField: {
    inputValue: string | null
  }

  constructor(/* … */) {
    this.inputField = reactive({
      inputValue: null
    })
  }
}

然后，使用它：

const helper = new InputFieldHelper(props.value, props.instance, props.formSection, props.isEnable);

const inputField = helper.inputField;