rn-custom-style-sheet/lib/module/MediaQuery/Utils/ToQuery/ToQuery.js

React Native component to select a specific value from a range of values.

import hyphenate from 'hyphenate-style-name';
import { MediaQueryProps } from '../../Components';
function negate(cond) {
  return `not ${cond}`;
}
function keyVal(k, v) {
  const realKey = hyphenate(k);
  // px shorthand
  if (typeof v === 'number') {
    v = `${v}px`;
  }
  if (v === true) {
    return realKey;
  }
  if (v === false) {
    return negate(realKey);
  }
  return `(${realKey}: ${v})`;
}
function join(conditions) {
  return conditions.join(' and ');
}
function toQuery(obj) {
  const rules = [];
  Object.keys(MediaQueryProps.all).forEach(k => {
    const v = obj[k];
    if (v != null) {
      rules.push(keyVal(k, v));
    }
  });
  return join(rules);
}
export default toQuery;
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