A vue-tel-input component that is customized to get the look-and-feel of Vuetify components.

vue-tel-input-customized.vue

<template>
  <div :class="topContainerClasses">
    <div
      v-click-outside="clickedOutside"
      :tabindex="dropdownOptions && dropdownOptions.tabindex ? dropdownOptions.tabindex : 0"
      :class="['vti__dropdown', { open: open }]"
      @keydown="keyboardNav"
      @click="toggleDropdown"
      @keydown.esc="reset"
    >
      <span class="vti__selection">
        <div v-if="enabledFlags" :class="['vti__flag', activeCountry.iso2.toLowerCase()]" />
        <span v-if="enabledCountryCode" class="vti__country-code">
          +{{ activeCountry.dialCode }}
        </span>
        <slot name="arrow-icon" :open="open">
          <span class="vti__dropdown-arrow">{{ open ? "▲" : "▼" }}</span>
        </slot>
      </span>
      <ul ref="list" class="vti__dropdown-list" v-show="open">
        <li
          v-for="(pb, index) in sortedCountries"
          :key="pb.iso2 + (pb.preferred ? '-preferred' : '')"
          :class="['vti__dropdown-item', getItemClass(index, pb.iso2)]"
          @click="choose(pb, true)"
          @mousemove="selectedIndex = index"
        >
          <div v-if="enabledFlags" :class="['vti__flag', pb.iso2.toLowerCase()]" />
          <strong>{{ pb.name }}</strong>
          <span v-if="dropdownOptions && !dropdownOptions.disabledDialCode">
            +{{ pb.dialCode }}
          </span>
        </li>
      </ul>
    </div>
    <div class="vti__input-container">
      <input
        ref="input"
        type="tel"
        v-model="phone"
        :disabled="disabled"
        :required="required"
        :autocomplete="autocomplete"
        :autofocus="autofocus"
        :name="name"
        :class="['vti__input', inputClasses]"
        :id="inputId"
        :maxlength="maxLen"
        :tabindex="inputOptions && inputOptions.tabindex ? inputOptions.tabindex : 0"
        @blur="onBlur"
        @input="onInput"
        @keyup.enter="onEnter"
        @keyup.space="onSpace"
      />
      <label
        ref="label"
        class="input-label"
        @click="focus"
      >
        {{ label }}<span class="required-sign" v-if="label && required"> *</span>
      </label>
      <div class="error-message">
        {{ errorMessage || rulesErrorMessage || 'Empty Error'}}
      </div>
    </div>
  </div>
</template>

<script>
import PhoneNumber from 'awesome-phonenumber';
import utils, { getCountry, setCaretPosition } from './utils';

function getDefault(key) {
  const value = utils.options[key];
  if (typeof value === 'undefined') {
    return utils.options[key];
  }
  return value;
}

// Polyfill for Event.path in IE 11: https://stackoverflow.com/a/46093727
function getParents(node, memo) {
  const parsedMemo = memo || [];
  const { parentNode } = node;

  if (!parentNode) {
    return parsedMemo;
  }

  return getParents(parentNode, parsedMemo.concat(parentNode));
}

export default {
  name: 'VueTelInputCustomized',
  directives: {
    // Click-outside by BosNaufal: https://github.com/BosNaufal/vue-click-outside
    'click-outside': {
      bind(el, binding, vNode) {
        // Provided expression must evaluate to a function.
        if (typeof binding.value !== 'function') {
          const compName = vNode.context.name;
          let warn = `[Vue-click-outside:] provided expression ${binding.expression} is not a function, but has to be`;
          if (compName) {
            warn += `Found in component ${compName}`;
          }
          window.console.warn(warn);
        }
        // Define Handler and cache it on the element
        const { bubble } = binding.modifiers;
        const handler = (e) => {
          // Fall back to composedPath if e.path is undefined
          const path = e.path
            || (e.composedPath ? e.composedPath() : false)
            || getParents(e.target);
          if (bubble || (path.length && !el.contains(path[0]) && el !== path[0])) {
            binding.value(e);
          }
        };
        el.__vueClickOutside__ = handler;
        // add Event Listeners
        document.addEventListener('click', handler);
      },
      unbind(el) {
        // Remove Event Listeners
        document.removeEventListener('click', el.__vueClickOutside__);
        el.__vueClickOutside__ = null;
      },
    },
  },
  props: {
    value: {
      type: String,
      default: '',
    },
    placeholder: {
      type: String,
      default: () => getDefault('placeholder'),
    },
    disabledFetchingCountry: {
      type: Boolean,
      default: () => getDefault('disabledFetchingCountry'),
    },
    disabled: {
      type: Boolean,
      default: () => getDefault('disabled'),
    },
    disabledFormatting: {
      type: Boolean,
      default: () => getDefault('disabledFormatting'),
    },
    error: {
      type: Boolean,
      default: Boolean
    },
    errorMessage: {
      type: String,
      default: ''
    },
    rules: {
      type: Array,
      default: null,
    },
    label: {
      type: String,
      default: ''
    },
    mode: {
      type: String,
      default: () => getDefault('mode'),
    },
    invalidMsg: {
      type: String,
      default: () => getDefault('invalidMsg'),
    },
    required: {
      type: Boolean,
      default: () => getDefault('required'),
    },
    allCountries: {
      type: Array,
      default: () => getDefault('allCountries'),
    },
    defaultCountry: {
      // Default country code, ie: 'AU'
      // Will override the current country of user
      type: String,
      default: () => getDefault('defaultCountry'),
    },
    enabledCountryCode: {
      type: Boolean,
      default: () => getDefault('enabledCountryCode'),
    },
    enabledFlags: {
      type: Boolean,
      default: () => getDefault('enabledFlags'),
    },
    preferredCountries: {
      type: Array,
      default: () => getDefault('preferredCountries'),
    },
    onlyCountries: {
      type: Array,
      default: () => getDefault('onlyCountries'),
    },
    ignoredCountries: {
      type: Array,
      default: () => getDefault('ignoredCountries'),
    },
    autocomplete: {
      type: String,
      default: () => getDefault('autocomplete'),
    },
    autofocus: {
      type: Boolean,
      default: () => getDefault('autofocus'),
    },
    name: {
      type: String,
      default: () => getDefault('name'),
    },
    wrapperClasses: {
      type: [String, Array, Object],
      default: () => getDefault('wrapperClasses'),
    },
    inputClasses: {
      type: [String, Array, Object],
      default: () => getDefault('inputClasses'),
    },
    inputId: {
      type: String,
      default: () => getDefault('inputId'),
    },
    dropdownOptions: {
      type: Object,
      default: () => getDefault('dropdownOptions'),
    },
    inputOptions: {
      type: Object,
      default: () => getDefault('inputOptions'),
    },
    maxLen: {
      type: Number,
      default: () => getDefault('maxLen'),
    },
    validCharactersOnly: {
      type: Boolean,
      default: () => getDefault('validCharactersOnly'),
    },
    dynamicPlaceholder: {
      type: Boolean,
      default: () => getDefault('dynamicPlaceholder'),
    },
  },
  data() {
    return {
      phone: '',
      activeCountry: { iso2: '' },
      open: false,
      finishMounted: false,
      selectedIndex: null,
      typeToFindInput: '',
      typeToFindTimer: null,
      cursorPosition: 0,
      touched: false,
      rulesErrorMessage: '',
    };
  },
  computed: {
    parsedPlaceholder() {
      if (!this.finishMounted) {
        return '';
      }
      if (this.dynamicPlaceholder) {
        const mode = this.mode || 'international';
        return PhoneNumber.getExample(this.activeCountry.iso2, 'mobile').getNumber(mode);
      }
      return this.placeholder;
    },
    parsedMode() {
      if (this.mode) {
        if (!['international', 'national'].includes(this.mode)) {
          window.console.error('Invalid value of prop "mode"');
        } else {
          return this.mode;
        }
      }
      if (!this.phone || this.phone[0] !== '+') {
        return 'national';
      }
      return 'international';
    },
    filteredCountries() {
      // List countries after filtered
      if (this.onlyCountries.length) {
        return this.getCountries(this.onlyCountries);
      }

      if (this.ignoredCountries.length) {
        return this.allCountries.filter(
          ({ iso2 }) => !this.ignoredCountries.includes(iso2.toUpperCase())
            && !this.ignoredCountries.includes(iso2.toLowerCase()),
        );
      }

      return this.allCountries;
    },
    sortedCountries() {
      // Sort the list countries: from preferred countries to all countries
      const preferredCountries = this.getCountries(this.preferredCountries)
        .map(country => ({ ...country, preferred: true }));

      return [...preferredCountries, ...this.filteredCountries];
    },
    phoneObject() {
      const result = PhoneNumber(this.phone, this.activeCountry.iso2).toJSON();
      Object.assign(result, {
        isValid: result.valid,
        country: this.activeCountry,
      });
      return result;
    },
    phoneText() {
      let key = 'input';
      if (this.phoneObject.valid) {
        key = this.parsedMode;
      }
      return this.phoneObject.number[key] || '';
    },
    topContainerClasses() {
      return [
        'vue-tel-input',
        this.wrapperClasses,
        { disabled: this.disabled },
        {'has-value': this.phone},
        {'has-error': this.error || this.rulesError}
      ];
    }
  },
  watch: {
    // eslint-disable-next-line func-names
    'phoneObject.valid': function (value) {
      if (value) {
        this.phone = this.phoneText;
      }
      this.$emit('validate', this.phoneObject);
      this.$emit('onValidate', this.phoneObject); // Deprecated
    },
    value() {
      this.phone = this.value ? this.value : '';
    },
    open(isDropdownOpened) {
      // Emit open and close events
      if (isDropdownOpened) {
        this.$emit('open');
      } else {
        this.$emit('close');
      }
    },
    phone(newValue, oldValue) {
      this.touched = true;
      this.validateRules(newValue);
      if (this.validCharactersOnly && !this.testCharacters()) {
        this.$nextTick(() => { this.phone = oldValue; });
      } else if (newValue) {
        if (newValue[0] === '+') {
          const code = PhoneNumber(newValue).getRegionCode();
          if (code) {
            this.activeCountry = this.findCountry(code) || this.activeCountry;
          }
        }
      }
      // Reset the cursor to current position if it's not the last character.
      if (this.cursorPosition < oldValue.length) {
        this.$nextTick(() => { setCaretPosition(this.$refs.input, this.cursorPosition); });
      }
    },
    activeCountry(value) {
      if (value && value.iso2) {
        this.$emit('country-changed', value);
      }
    },
  },
  mounted() {
    this.initializeCountry()
      .then(() => {
        if (!this.phone
          && this.inputOptions
          && this.inputOptions.showDialCode
          && this.activeCountry.dialCode) {
          this.phone = `+${this.activeCountry.dialCode}`;
        }
        this.$emit('validate', this.phoneObject);
        this.$emit('onValidate', this.phoneObject); // Deprecated
      })
      .catch(window.console.error)
      .finally(() => {
        this.finishMounted = true;
      });
    if (this.phone) {
      this.touched = true;
    }
  },
  created() {
    if (this.value) {
      this.phone = this.value.trim();
    }
  },
  methods: {
    validateRules(val) {
      this.rulesError = false;
      this.rulesErrorMessage = '';
      if (this.touched && this.rules && this.rules.length > 0) {
        for (let i = 0; i < this.rules.length; i++) {
          if (this.rules[i](val) !== true) {
            this.rulesError = true;
            this.rulesErrorMessage = this.rules[i](val);
          }
        }
      }
    },
    initializeCountry() {
      return new Promise((resolve) => {
        /**
         * 1. If the phone included prefix (+12), try to get the country and set it
         */
        if (this.phone && this.phone[0] === '+') {
          const activeCountry = PhoneNumber(this.phone).getRegionCode();
          if (activeCountry) {
            this.choose(activeCountry);
            resolve();
            return;
          }
        }
        /**
         * 2. Use default country if passed from parent
         */
        if (this.defaultCountry) {
          const defaultCountry = this.findCountry(this.defaultCountry);
          if (defaultCountry) {
            this.choose(defaultCountry);
            resolve();
            return;
          }
        }
        const fallbackCountry = this.findCountry(this.preferredCountries[0])
          || this.filteredCountries[0];
        /**
         * 3. Check if fetching country based on user's IP is allowed, set it as the default country
         */
        if (!this.disabledFetchingCountry) {
          getCountry()
            .then((res) => {
              this.activeCountry = this.findCountry(res) || this.activeCountry;
            })
            .catch((error) => {
              window.console.warn(error);
              /**
               * 4. Use the first country from preferred list (if available) or all countries list
               */
              this.choose(fallbackCountry);
            })
            .finally(() => {
              resolve();
            });
        } else {
          /**
           * 4. Use the first country from preferred list (if available) or all countries list
           */
          this.choose(fallbackCountry);
          resolve();
        }
      });
    },
    /**
     * Get the list of countries from the list of iso2 code
     */
    getCountries(list = []) {
      return list
        .map(countryCode => this.findCountry(countryCode))
        .filter(Boolean);
    },
    findCountry(iso = '') {
      return this.allCountries.find(country => country.iso2 === iso.toUpperCase());
    },
    getItemClass(index, iso2) {
      const highlighted = this.selectedIndex === index;
      const lastPreferred = index === this.preferredCountries.length - 1;
      const preferred = this.preferredCountries.some(c => c.toUpperCase() === iso2);
      return {
        highlighted,
        'last-preferred': lastPreferred,
        preferred,
      };
    },
    choose(country, toEmitInputEvent = false) {
      let parsedCountry = country;
      if (typeof parsedCountry === 'string') {
        parsedCountry = this.findCountry(parsedCountry);
      }
      if (!parsedCountry) {
        return;
      }
      this.activeCountry = parsedCountry || this.activeCountry || {};
      if (this.phone
        && this.phone[0] === '+'
        && this.activeCountry.iso2
        && this.phoneObject.number.national) {
        // Attach the current phone number with the newly selected country
        this.phone = PhoneNumber(this.phoneObject.number.national, this.activeCountry.iso2)
          .getNumber('international');
      } else if (this.inputOptions && this.inputOptions.showDialCode && parsedCountry) {
        // Reset phone if the showDialCode is set
        this.phone = `+${parsedCountry.dialCode}`;
      }
      if (toEmitInputEvent) {
        this.$emit('input', this.phoneText, this.phoneObject);
        this.$emit('onInput', this.phoneObject); // Deprecated
      }
    },
    testCharacters() {
      const re = /^[()\-+0-9\s]*$/;
      return re.test(this.phone);
    },
    onInput(e) {
      if (this.validCharactersOnly && !this.testCharacters()) {
        return;
      }
      this.$refs.input.setCustomValidity(this.phoneObject.valid ? '' : this.invalidMsg);
      // Returns response.number to assign it to v-model (if being used)
      // Returns full response for cases @input is used
      // and parent wants to return the whole response.
      this.$emit('input', this.phoneText, this.phoneObject);
      this.$emit('onInput', this.phoneObject); // Deprecated

      // Keep the current cursor position just in case the input reformatted
      // and it gets moved to the last character.
      if (e && e.target) {
        this.cursorPosition = e.target.selectionStart;
      }
    },
    onBlur() {
      this.$emit('blur');
      this.$emit('onBlur'); // Deprecated
      this.touched = true;
      this.$nextTick(() => {
        this.validateRules(this.phone);
      })
    },
    onEnter() {
      this.$emit('enter');
      this.$emit('onEnter'); // Deprecated
    },
    onSpace() {
      this.$emit('space');
      this.$emit('onSpace'); // Deprecated
    },
    focus() {
      this.$refs.input.focus();
    },
    toggleDropdown() {
      if (this.disabled) {
        return;
      }
      this.open = !this.open;
    },
    clickedOutside() {
      this.open = false;
    },
    keyboardNav(e) {
      if (e.keyCode === 40) {
        // down arrow
        e.preventDefault();
        this.open = true;
        if (this.selectedIndex === null) {
          this.selectedIndex = 0;
        } else {
          this.selectedIndex = Math.min(this.sortedCountries.length - 1, this.selectedIndex + 1);
        }
        const selEle = this.$refs.list.children[this.selectedIndex];
        if (selEle.offsetTop + selEle.clientHeight
          > this.$refs.list.scrollTop + this.$refs.list.clientHeight) {
          this.$refs.list.scrollTop = selEle.offsetTop
            - this.$refs.list.clientHeight
            + selEle.clientHeight;
        }
      } else if (e.keyCode === 38) {
        // up arrow
        e.preventDefault();
        this.open = true;
        if (this.selectedIndex === null) {
          this.selectedIndex = this.sortedCountries.length - 1;
        } else {
          this.selectedIndex = Math.max(0, this.selectedIndex - 1);
        }
        const selEle = this.$refs.list.children[this.selectedIndex];
        if (selEle.offsetTop < this.$refs.list.scrollTop) {
          this.$refs.list.scrollTop = selEle.offsetTop;
        }
      } else if (e.keyCode === 13) {
        // enter key
        if (this.selectedIndex !== null) {
          this.choose(this.sortedCountries[this.selectedIndex]);
        }
        this.open = !this.open;
      } else {
        // typing a country's name
        this.typeToFindInput += e.key;
        clearTimeout(this.typeToFindTimer);
        this.typeToFindTimer = setTimeout(() => {
          this.typeToFindInput = '';
        }, 700);
        // don't include preferred countries so we jump to the right place in the alphabet
        const typedCountryI = this.sortedCountries
          .slice(this.preferredCountries.length)
          .findIndex(c => c.name.toLowerCase().startsWith(this.typeToFindInput));
        if (typedCountryI >= 0) {
          this.selectedIndex = this.preferredCountries.length + typedCountryI;
          const selEle = this.$refs.list.children[this.selectedIndex];
          const needToScrollTop = selEle.offsetTop < this.$refs.list.scrollTop;
          const needToScrollBottom = selEle.offsetTop + selEle.clientHeight
            > this.$refs.list.scrollTop + this.$refs.list.clientHeight;
          if (needToScrollTop || needToScrollBottom) {
            this.$refs.list.scrollTop = selEle.offsetTop - this.$refs.list.clientHeight / 2;
          }
        }
      }
    },
    reset() {
      this.selectedIndex = this.sortedCountries.map(c => c.iso2).indexOf(this.activeCountry.iso2);
      this.open = false;
    },
  },
};
</script>

<style src="./assets/sprite.css"></style>
<style lang="scss">
.vue-tel-input {
  border-radius: 0px;
  display: flex;
  text-align: left;
  font-family: 'Roboto', sans-serif;
}
.vue-tel-input.disabled .selection,
.vue-tel-input.disabled .dropdown,
.vue-tel-input.disabled input {
  cursor: no-drop;
}

.vti__dropdown {
  display: flex;
  flex-direction: column;
  align-content: center;
  justify-content: flex-start;
  position: relative;
  padding-top: 20px;
  cursor: pointer;
  outline: none;
}
.vti__dropdown.show {
  max-height: 300px;
  overflow: scroll;
}
.vti__dropdown.open .vti__selection {
  background-color: #f3f3f3;
}
.vti__dropdown:hover .vti__selection {
  background-color: #f3f3f3;
}
.vti__selection {
  font-size: 0.8em;
  display: flex;
  align-items: center;
}
.vti__selection .vti__country-code {
  color: #666;
}
.vti__flag {
  margin-right: 5px;
  margin-left: 5px;
}
.vti__dropdown-list {
  z-index: 1;
  padding: 0;
  margin: 0;
  text-align: left;
  list-style: none;
  max-height: 200px;
  overflow-y: scroll;
  position: absolute;
  top: 33px;
  left: -1px;
  background-color: #fff;
  border: 1px solid #ccc;
  width: 390px;
}
.vti__dropdown-arrow {
  transform: scaleY(0.5);
  display: inline-block;
  color: #666;
}
.vti__dropdown-item {
  cursor: pointer;
  padding: 4px 15px;
}
.vti__dropdown-item.highlighted {
  background-color: #f3f3f3;
}
.vti__dropdown-item.last-preferred {
  border-bottom: 1px solid #cacaca;
}
.vti__dropdown-item .vti__flag {
  display: inline-block;
  margin-right: 5px;
}
.vti__input {
  border: none;
  border-radius: 0 2px 2px 0;
  width: 100%;
  outline: none;
  padding-left: 7px;
}

.vue-tel-input {
  .vti__input-container {
    font-family: 'Roboto', sans-serif;
    min-height: 42px;
    position: relative;

    label {
      position: absolute;
      top: 20px;
      cursor: pointer;
      left: 7px;
      transform-origin: top left;
      transition: all 0.25s cubic-bezier(0.645, 0.045, 0.355, 1);
      font-size: 13px;
      color: #333;

      .required-sign {
        color: #ff3547;
      }
    }

    input {
      transition-duration: 0.3s;
      position: relative;
      width: 100%;
      font-weight: 400;
      appearance: none;
      outline: none;
      border-bottom: 1px solid #c7c7c7;
      border-radius: 0;
      font-size: 12px;
      height: 42px;
      min-height: 42px;
      padding-top: 16px;
      margin-left: 7px;
      padding-left: 0;
    }

    .error-message {
      opacity: 0;
      font-size: 11px;
      color: #ff3547;
      margin-left: 7px;
    }
  }

  &:focus-within {
    .vti__input-container {
      input {
        border-bottom: 2px solid #4285f4;
      }

      label {
        color: #4285f4;
        transform: translateY(-18px) scale(0.75);
      }
    }

    &.has-error {
      .vti__input-container input {
        border-bottom: 2px solid #ff3547;
      }
    }
  }

  &.has-value {
    .vti__input-container label {
      transform: translateY(-18px) scale(0.75);
    }
  }

  &.has-error {
    .vti__input-container {
      input {
        border-color: #ff3547;
      }
      label {
        color: #ff3547;
      }
      .error-message {
        opacity: 1;
        color: #ff3547;
      }
    }
  }
}
</style>

This component was made by customizing vue-tel-input package to get the look-and-feel of Vuetify components. Although I have tried to find out a vuetify-component-like phone number input component, I couldn't find it. So I selected vue-tel-input because it is full-functioning except the look-and-feel, and customized it.