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node_modules/@vant/weapp/dist/area/index.d.ts

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+export {};

node_modules/@vant/weapp/dist/area/index.js

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+import { VantComponent } from '../common/component';
+import { pickerProps } from '../picker/shared';
+import { requestAnimationFrame } from '../common/utils';
+const EMPTY_CODE = '000000';
+VantComponent({
+    classes: ['active-class', 'toolbar-class', 'column-class'],
+    props: Object.assign(Object.assign({}, pickerProps), { showToolbar: {
+            type: Boolean,
+            value: true,
+        }, value: {
+            type: String,
+            observer(value) {
+                this.code = value;
+                this.setValues();
+            },
+        }, areaList: {
+            type: Object,
+            value: {},
+            observer: 'setValues',
+        }, columnsNum: {
+            type: null,
+            value: 3,
+        }, columnsPlaceholder: {
+            type: Array,
+            observer(val) {
+                this.setData({
+                    typeToColumnsPlaceholder: {
+                        province: val[0] || '',
+                        city: val[1] || '',
+                        county: val[2] || '',
+                    },
+                });
+            },
+        } }),
+    data: {
+        columns: [{ values: [] }, { values: [] }, { values: [] }],
+        typeToColumnsPlaceholder: {},
+    },
+    mounted() {
+        requestAnimationFrame(() => {
+            this.setValues();
+        });
+    },
+    methods: {
+        getPicker() {
+            if (this.picker == null) {
+                this.picker = this.selectComponent('.van-area__picker');
+            }
+            return this.picker;
+        },
+        onCancel(event) {
+            this.emit('cancel', event.detail);
+        },
+        onConfirm(event) {
+            const { index } = event.detail;
+            let { value } = event.detail;
+            value = this.parseValues(value);
+            this.emit('confirm', { value, index });
+        },
+        emit(type, detail) {
+            detail.values = detail.value;
+            delete detail.value;
+            this.$emit(type, detail);
+        },
+        parseValues(values) {
+            const { columnsPlaceholder } = this.data;
+            return values.map((value, index) => {
+                if (value &&
+                    (!value.code || value.name === columnsPlaceholder[index])) {
+                    return Object.assign(Object.assign({}, value), { code: '', name: '' });
+                }
+                return value;
+            });
+        },
+        onChange(event) {
+            var _a;
+            const { index, picker, value } = event.detail;
+            this.code = value[index].code;
+            (_a = this.setValues()) === null || _a === void 0 ? void 0 : _a.then(() => {
+                this.$emit('change', {
+                    picker,
+                    values: this.parseValues(picker.getValues()),
+                    index,
+                });
+            });
+        },
+        getConfig(type) {
+            const { areaList } = this.data;
+            return (areaList && areaList[`${type}_list`]) || {};
+        },
+        getList(type, code) {
+            if (type !== 'province' && !code) {
+                return [];
+            }
+            const { typeToColumnsPlaceholder } = this.data;
+            const list = this.getConfig(type);
+            let result = Object.keys(list).map((code) => ({
+                code,
+                name: list[code],
+            }));
+            if (code != null) {
+                // oversea code
+                if (code[0] === '9' && type === 'city') {
+                    code = '9';
+                }
+                result = result.filter((item) => item.code.indexOf(code) === 0);
+            }
+            if (typeToColumnsPlaceholder[type] && result.length) {
+                // set columns placeholder
+                const codeFill = type === 'province'
+                    ? ''
+                    : type === 'city'
+                        ? EMPTY_CODE.slice(2, 4)
+                        : EMPTY_CODE.slice(4, 6);
+                result.unshift({
+                    code: `${code}${codeFill}`,
+                    name: typeToColumnsPlaceholder[type],
+                });
+            }
+            return result;
+        },
+        getIndex(type, code) {
+            let compareNum = type === 'province' ? 2 : type === 'city' ? 4 : 6;
+            const list = this.getList(type, code.slice(0, compareNum - 2));
+            // oversea code
+            if (code[0] === '9' && type === 'province') {
+                compareNum = 1;
+            }
+            code = code.slice(0, compareNum);
+            for (let i = 0; i < list.length; i++) {
+                if (list[i].code.slice(0, compareNum) === code) {
+                    return i;
+                }
+            }
+            return 0;
+        },
+        setValues() {
+            const picker = this.getPicker();
+            if (!picker) {
+                return;
+            }
+            let code = this.code || this.getDefaultCode();
+            const provinceList = this.getList('province');
+            const cityList = this.getList('city', code.slice(0, 2));
+            const stack = [];
+            const indexes = [];
+            const { columnsNum } = this.data;
+            if (columnsNum >= 1) {
+                stack.push(picker.setColumnValues(0, provinceList, false));
+                indexes.push(this.getIndex('province', code));
+            }
+            if (columnsNum >= 2) {
+                stack.push(picker.setColumnValues(1, cityList, false));
+                indexes.push(this.getIndex('city', code));
+                if (cityList.length && code.slice(2, 4) === '00') {
+                    [{ code }] = cityList;
+                }
+            }
+            if (columnsNum === 3) {
+                stack.push(picker.setColumnValues(2, this.getList('county', code.slice(0, 4)), false));
+                indexes.push(this.getIndex('county', code));
+            }
+            return Promise.all(stack)
+                .catch(() => { })
+                .then(() => picker.setIndexes(indexes))
+                .catch(() => { });
+        },
+        getDefaultCode() {
+            const { columnsPlaceholder } = this.data;
+            if (columnsPlaceholder.length) {
+                return EMPTY_CODE;
+            }
+            const countyCodes = Object.keys(this.getConfig('county'));
+            if (countyCodes[0]) {
+                return countyCodes[0];
+            }
+            const cityCodes = Object.keys(this.getConfig('city'));
+            if (cityCodes[0]) {
+                return cityCodes[0];
+            }
+            return '';
+        },
+        getValues() {
+            const picker = this.getPicker();
+            if (!picker) {
+                return [];
+            }
+            return this.parseValues(picker.getValues().filter((value) => !!value));
+        },
+        getDetail() {
+            const values = this.getValues();
+            const area = {
+                code: '',
+                country: '',
+                province: '',
+                city: '',
+                county: '',
+            };
+            if (!values.length) {
+                return area;
+            }
+            const names = values.map((item) => item.name);
+            area.code = values[values.length - 1].code;
+            if (area.code[0] === '9') {
+                area.country = names[1] || '';
+                area.province = names[2] || '';
+            }
+            else {
+                area.province = names[0] || '';
+                area.city = names[1] || '';
+                area.county = names[2] || '';
+            }
+            return area;
+        },
+        reset(code) {
+            this.code = code || '';
+            return this.setValues();
+        },
+    },
+});

node_modules/@vant/weapp/dist/area/index.json

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+{
+  "component": true,
+  "usingComponents": {
+    "van-picker": "../picker/index"
+  }
+}

node_modules/@vant/weapp/dist/area/index.wxml

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+<wxs src="./index.wxs" module="computed" />
+
+<van-picker
+  class="van-area__picker"
+  active-class="active-class"
+  toolbar-class="toolbar-class"
+  column-class="column-class"
+  show-toolbar="{{ showToolbar }}"
+  value-key="name"
+  title="{{ title }}"
+  loading="{{ loading }}"
+  columns="{{ computed.displayColumns(columns, columnsNum) }}"
+  item-height="{{ itemHeight }}"
+  visible-item-count="{{ visibleItemCount }}"
+  cancel-button-text="{{ cancelButtonText }}"
+  confirm-button-text="{{ confirmButtonText }}"
+  bind:change="onChange"
+  bind:confirm="onConfirm"
+  bind:cancel="onCancel"
+/>

node_modules/@vant/weapp/dist/area/index.wxs

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+/* eslint-disable */
+function displayColumns(columns, columnsNum) {
+  return columns.slice(0, +columnsNum);
+}
+
+module.exports = {
+  displayColumns: displayColumns,
+};

node_modules/@vant/weapp/dist/area/index.wxss

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+@import '../common/index.wxss';