element-plus/es/components/transfer/src/composables/use-computed-data.mjs

A Component Library for Vue 3

import { computed } from 'vue';
import { usePropsAlias } from './use-props-alias.mjs';

const useComputedData = (props) => {
  const propsAlias = usePropsAlias(props);
  const dataObj = computed(
    () => props.data.reduce((o, cur) => (o[cur[propsAlias.value.key]] = cur) && o, {})
  );
  const sourceData = computed(
    () => props.data.filter(
      (item) => !props.modelValue.includes(item[propsAlias.value.key])
    )
  );
  const targetData = computed(() => {
    if (props.targetOrder === "original") {
      return props.data.filter(
        (item) => props.modelValue.includes(item[propsAlias.value.key])
      );
    } else {
      return props.modelValue.reduce(
        (arr, cur) => {
          const val = dataObj.value[cur];
          if (val) {
            arr.push(val);
          }
          return arr;
        },
        []
      );
    }
  });
  return {
    sourceData,
    targetData
  };
};

export { useComputedData };
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