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node_modules/vant/es/button/index.css

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+.van-button{position:relative;display:inline-block;box-sizing:border-box;height:44px;margin:0;padding:0;font-size:16px;line-height:1.2;text-align:center;border-radius:2px;cursor:pointer;-webkit-transition:opacity .2s;transition:opacity .2s;-webkit-appearance:none}.van-button::before{position:absolute;top:50%;left:50%;width:100%;height:100%;background-color:#000;border:inherit;border-color:#000;border-radius:inherit;-webkit-transform:translate(-50%,-50%);transform:translate(-50%,-50%);opacity:0;content:' '}.van-button:active::before{opacity:.1}.van-button--disabled::before,.van-button--loading::before{display:none}.van-button--default{color:#323233;background-color:#fff;border:1px solid #ebedf0}.van-button--primary{color:#fff;background-color:#07c160;border:1px solid #07c160}.van-button--info{color:#fff;background-color:#1989fa;border:1px solid #1989fa}.van-button--danger{color:#fff;background-color:#ee0a24;border:1px solid #ee0a24}.van-button--warning{color:#fff;background-color:#ff976a;border:1px solid #ff976a}.van-button--plain{background-color:#fff}.van-button--plain.van-button--primary{color:#07c160}.van-button--plain.van-button--info{color:#1989fa}.van-button--plain.van-button--danger{color:#ee0a24}.van-button--plain.van-button--warning{color:#ff976a}.van-button--large{width:100%;height:50px}.van-button--normal{padding:0 15px;font-size:14px}.van-button--small{height:32px;padding:0 8px;font-size:12px}.van-button__loading{color:inherit;font-size:inherit}.van-button--mini{height:24px;padding:0 4px;font-size:10px}.van-button--mini+.van-button--mini{margin-left:4px}.van-button--block{display:block;width:100%}.van-button--disabled{cursor:not-allowed;opacity:.5}.van-button--loading{cursor:default}.van-button--round{border-radius:999px}.van-button--square{border-radius:0}.van-button__content{display:-webkit-box;display:-webkit-flex;display:flex;-webkit-box-align:center;-webkit-align-items:center;align-items:center;-webkit-box-pack:center;-webkit-justify-content:center;justify-content:center;height:100%}.van-button__content::before{content:' '}.van-button__icon{font-size:1.2em;line-height:inherit}.van-button__icon+.van-button__text,.van-button__loading+.van-button__text,.van-button__text+.van-button__icon,.van-button__text+.van-button__loading{margin-left:4px}.van-button--hairline{border-width:0}.van-button--hairline::after{border-color:inherit;border-radius:4px}.van-button--hairline.van-button--round::after{border-radius:999px}.van-button--hairline.van-button--square::after{border-radius:0}

node_modules/vant/es/button/index.js

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+import _extends from "@babel/runtime/helpers/esm/extends";
+import _mergeJSXProps from "@vue/babel-helper-vue-jsx-merge-props";
+// Utils
+import { createNamespace } from '../utils';
+import { emit, inherit } from '../utils/functional';
+import { BORDER_SURROUND } from '../utils/constant';
+import { routeProps, functionalRoute } from '../utils/router'; // Components
+
+import Icon from '../icon';
+import Loading from '../loading'; // Types
+
+var _createNamespace = createNamespace('button'),
+    createComponent = _createNamespace[0],
+    bem = _createNamespace[1];
+
+function Button(h, props, slots, ctx) {
+  var _ref;
+
+  var tag = props.tag,
+      icon = props.icon,
+      type = props.type,
+      color = props.color,
+      plain = props.plain,
+      disabled = props.disabled,
+      loading = props.loading,
+      hairline = props.hairline,
+      loadingText = props.loadingText,
+      iconPosition = props.iconPosition;
+  var style = {};
+
+  if (color) {
+    style.color = plain ? color : 'white';
+
+    if (!plain) {
+      // Use background instead of backgroundColor to make linear-gradient work
+      style.background = color;
+    } // hide border when color is linear-gradient
+
+
+    if (color.indexOf('gradient') !== -1) {
+      style.border = 0;
+    } else {
+      style.borderColor = color;
+    }
+  }
+
+  function onClick(event) {
+    if (props.loading) {
+      event.preventDefault();
+    }
+
+    if (!loading && !disabled) {
+      emit(ctx, 'click', event);
+      functionalRoute(ctx);
+    }
+  }
+
+  function onTouchstart(event) {
+    emit(ctx, 'touchstart', event);
+  }
+
+  var classes = [bem([type, props.size, {
+    plain: plain,
+    loading: loading,
+    disabled: disabled,
+    hairline: hairline,
+    block: props.block,
+    round: props.round,
+    square: props.square
+  }]), (_ref = {}, _ref[BORDER_SURROUND] = hairline, _ref)];
+
+  function renderIcon() {
+    if (loading) {
+      return slots.loading ? slots.loading() : h(Loading, {
+        "class": bem('loading'),
+        "attrs": {
+          "size": props.loadingSize,
+          "type": props.loadingType,
+          "color": "currentColor"
+        }
+      });
+    }
+
+    if (slots.icon) {
+      return h("div", {
+        "class": bem('icon')
+      }, [slots.icon()]);
+    }
+
+    if (icon) {
+      return h(Icon, {
+        "attrs": {
+          "name": icon,
+          "classPrefix": props.iconPrefix
+        },
+        "class": bem('icon')
+      });
+    }
+  }
+
+  function renderContent() {
+    var content = [];
+
+    if (iconPosition === 'left') {
+      content.push(renderIcon());
+    }
+
+    var text;
+
+    if (loading) {
+      text = loadingText;
+    } else {
+      text = slots.default ? slots.default() : props.text;
+    }
+
+    if (text) {
+      content.push(h("span", {
+        "class": bem('text')
+      }, [text]));
+    }
+
+    if (iconPosition === 'right') {
+      content.push(renderIcon());
+    }
+
+    return content;
+  }
+
+  return h(tag, _mergeJSXProps([{
+    "style": style,
+    "class": classes,
+    "attrs": {
+      "type": props.nativeType,
+      "disabled": disabled
+    },
+    "on": {
+      "click": onClick,
+      "touchstart": onTouchstart
+    }
+  }, inherit(ctx)]), [h("div", {
+    "class": bem('content')
+  }, [renderContent()])]);
+}
+
+Button.props = _extends({}, routeProps, {
+  text: String,
+  icon: String,
+  color: String,
+  block: Boolean,
+  plain: Boolean,
+  round: Boolean,
+  square: Boolean,
+  loading: Boolean,
+  hairline: Boolean,
+  disabled: Boolean,
+  iconPrefix: String,
+  nativeType: String,
+  loadingText: String,
+  loadingType: String,
+  tag: {
+    type: String,
+    default: 'button'
+  },
+  type: {
+    type: String,
+    default: 'default'
+  },
+  size: {
+    type: String,
+    default: 'normal'
+  },
+  loadingSize: {
+    type: String,
+    default: '20px'
+  },
+  iconPosition: {
+    type: String,
+    default: 'left'
+  }
+});
+export default createComponent(Button);

node_modules/vant/es/button/index.less

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+@import '../style/var';
+
+.van-button {
+  position: relative;
+  display: inline-block;
+  box-sizing: border-box;
+  height: @button-default-height;
+  margin: 0;
+  padding: 0;
+  font-size: @button-default-font-size;
+  line-height: @button-default-line-height;
+  text-align: center;
+  border-radius: @button-border-radius;
+  cursor: pointer;
+  transition: opacity @animation-duration-fast;
+  -webkit-appearance: none;
+
+  &::before {
+    position: absolute;
+    top: 50%;
+    left: 50%;
+    width: 100%;
+    height: 100%;
+    background-color: @black;
+    border: inherit;
+    border-color: @black;
+    border-radius: inherit; /* inherit parent's border radius */
+    transform: translate(-50%, -50%);
+    opacity: 0;
+    content: ' ';
+  }
+
+  &:active::before {
+    opacity: 0.1;
+  }
+
+  &--loading,
+  &--disabled {
+    &::before {
+      display: none;
+    }
+  }
+
+  &--default {
+    color: @button-default-color;
+    background-color: @button-default-background-color;
+    border: @button-border-width solid @button-default-border-color;
+  }
+
+  &--primary {
+    color: @button-primary-color;
+    background-color: @button-primary-background-color;
+    border: @button-border-width solid @button-primary-border-color;
+  }
+
+  &--info {
+    color: @button-info-color;
+    background-color: @button-info-background-color;
+    border: @button-border-width solid @button-info-border-color;
+  }
+
+  &--danger {
+    color: @button-danger-color;
+    background-color: @button-danger-background-color;
+    border: @button-border-width solid @button-danger-border-color;
+  }
+
+  &--warning {
+    color: @button-warning-color;
+    background-color: @button-warning-background-color;
+    border: @button-border-width solid @button-warning-border-color;
+  }
+
+  &--plain {
+    background-color: @button-plain-background-color;
+
+    &.van-button--primary {
+      color: @button-primary-background-color;
+    }
+
+    &.van-button--info {
+      color: @button-info-background-color;
+    }
+
+    &.van-button--danger {
+      color: @button-danger-background-color;
+    }
+
+    &.van-button--warning {
+      color: @button-warning-background-color;
+    }
+  }
+
+  &--large {
+    width: 100%;
+    height: @button-large-height;
+  }
+
+  &--normal {
+    padding: 0 15px;
+    font-size: @button-normal-font-size;
+  }
+
+  &--small {
+    height: @button-small-height;
+    padding: 0 @padding-xs;
+    font-size: @button-small-font-size;
+  }
+
+  &__loading {
+    color: inherit;
+    font-size: inherit;
+  }
+
+  &--mini {
+    height: @button-mini-height;
+    padding: 0 @padding-base;
+    font-size: @button-mini-font-size;
+
+    & + .van-button--mini {
+      margin-left: @padding-base;
+    }
+  }
+
+  &--block {
+    display: block;
+    width: 100%;
+  }
+
+  &--disabled {
+    cursor: not-allowed;
+    opacity: @button-disabled-opacity;
+  }
+
+  &--loading {
+    cursor: default;
+  }
+
+  &--round {
+    border-radius: @button-round-border-radius;
+  }
+
+  &--square {
+    border-radius: 0;
+  }
+
+  // align-items are ignored when flex container is a button in legacy safari
+  // see: https://bugs.webkit.org/show_bug.cgi?id=169700
+  &__content {
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    height: 100%;
+
+    // fix icon vertical align
+    // see: https://github.com/vant-ui/vant/issues/7617
+    &::before {
+      content: ' ';
+    }
+  }
+
+  &__icon {
+    font-size: 1.2em;
+    line-height: inherit;
+  }
+
+  &__icon + &__text,
+  &__loading + &__text,
+  &__text + &__icon,
+  &__text + &__loading {
+    margin-left: @padding-base;
+  }
+
+  &--hairline {
+    border-width: 0;
+
+    &::after {
+      border-color: inherit;
+      border-radius: @button-border-radius * 2;
+    }
+
+    &.van-button--round::after {
+      border-radius: @button-round-border-radius;
+    }
+
+    &.van-button--square::after {
+      border-radius: 0;
+    }
+  }
+}

node_modules/vant/es/button/style/index.js

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+import '../../style/base.css';
+import '../../info/index.css';
+import '../../icon/index.css';
+import '../../loading/index.css';
+import '../index.css';

node_modules/vant/es/button/style/less.js

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+import '../../style/base.less';
+import '../../info/index.less';
+import '../../icon/index.less';
+import '../../loading/index.less';
+import '../index.less';