@vnmfify/core/flex/flex.js

```shell npm i @vnmfify/core -S ```

import _isArray from "lodash/isArray";
import _toNumber from "lodash/toNumber";
import _isString from "lodash/isString";
import _isNumber from "lodash/isNumber";
var _excluded = ["className", "style", "gutter", "direction", "wrap", "justify", "align", "children"];

function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); if (enumerableOnly) { symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; }); } keys.push.apply(keys, symbols); } return keys; }

function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; if (i % 2) { ownKeys(Object(source), true).forEach(function (key) { _defineProperty(target, key, source[key]); }); } else if (Object.getOwnPropertyDescriptors) { Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)); } else { ownKeys(Object(source)).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } } return target; }

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

function _objectWithoutProperties(source, excluded) { if (source == null) return {}; var target = _objectWithoutPropertiesLoose(source, excluded); var key, i; if (Object.getOwnPropertySymbols) { var sourceSymbolKeys = Object.getOwnPropertySymbols(source); for (i = 0; i < sourceSymbolKeys.length; i++) { key = sourceSymbolKeys[i]; if (excluded.indexOf(key) >= 0) continue; if (!Object.prototype.propertyIsEnumerable.call(source, key)) continue; target[key] = source[key]; } } return target; }

function _objectWithoutPropertiesLoose(source, excluded) { if (source == null) return {}; var target = {}; var sourceKeys = Object.keys(source); var key, i; for (i = 0; i < sourceKeys.length; i++) { key = sourceKeys[i]; if (excluded.indexOf(key) >= 0) continue; target[key] = source[key]; } return target; }

import { View } from "@vnxjs/components";
import classNames from "classnames";
import * as React from "react";
import { forwardRef, useMemo } from "react";
import { prefixClassname } from "../styles";
import { addUnitPx } from "../utils/format/unit";
import FlexContext from "./flex.context";

function useFlexGutter(gutter) {
  return useMemo(() => {
    if (gutter === undefined) {
      return [undefined, undefined];
    }

    if (_isNumber(gutter)) {
      return [gutter, gutter];
    }

    if (_isString(gutter)) {
      var gutterNumber = _toNumber(gutter);

      return [gutterNumber, gutterNumber];
    }

    if (_isArray(gutter)) {
      var [horizontalGutter, verticalGutter] = gutter;
      return [_toNumber(horizontalGutter), _toNumber(verticalGutter)];
    }

    return [0, 0];
  }, [gutter]);
}

var Flex = /*#__PURE__*/forwardRef((props, ref) => {
  var {
    className,
    style,
    gutter: gutterProp,
    direction = "row",
    wrap = "nowrap",
    justify = "start",
    align = "start",
    children
  } = props,
      restProps = _objectWithoutProperties(props, _excluded);

  var gutter = useFlexGutter(gutterProp);
  var [horizontalGutter] = gutter;
  var gutterStyle = useMemo(() => {
    var gutterStyle = {};

    if (horizontalGutter) {
      var averagePadding = _toNumber(horizontalGutter) / 2;
      gutterStyle.marginLeft = addUnitPx(-averagePadding);
      gutterStyle.marginRight = addUnitPx(-averagePadding);
    }

    return {};
  }, [horizontalGutter]);
  return /*#__PURE__*/React.createElement(View, _objectSpread({
    ref: ref,
    className: classNames(prefixClassname("flex"), {
      [prefixClassname("flex--row")]: direction === "row",
      [prefixClassname("flex--row-reverse")]: direction === "row-reverse",
      [prefixClassname("flex--column")]: direction === "column",
      [prefixClassname("flex--column-reverse")]: direction === "column-reverse",
      [prefixClassname("flex--nowrap")]: wrap === "nowrap",
      [prefixClassname("flex--wrap")]: wrap === "wrap",
      [prefixClassname("flex--wrap-reverse")]: wrap === "wrap-reverse",
      [prefixClassname("flex--justify-start")]: justify === "start",
      [prefixClassname("flex--justify-center")]: justify === "center",
      [prefixClassname("flex--justify-end")]: justify === "end",
      [prefixClassname("flex--justify-space-around")]: justify === "space-around",
      [prefixClassname("flex--justify-space-between")]: justify === "space-between",
      [prefixClassname("flex--align-start")]: align === "start",
      [prefixClassname("flex--align-center")]: align === "center",
      [prefixClassname("flex--align-end")]: align === "end",
      [prefixClassname("flex--align-baseline")]: align === "baseline",
      [prefixClassname("flex--align-stretch")]: align === "stretch"
    }, className),
    style: _objectSpread(_objectSpread({}, style), gutterStyle)
  }, restProps), /*#__PURE__*/React.createElement(FlexContext.Provider, {
    value: {
      gutter
    },
    children: children
  }));
});
export default Flex;
//# sourceMappingURL=flex.js.map