font-detect-rhl/build/hooks/useAssumeGraphite/useAssumeGraphite.js

A React Hook Library for Detecting Fonts

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports["default"] = useAssumeGraphite;
var _react = require("react");
var _propTypes = _interopRequireDefault(require("prop-types"));
function _interopRequireDefault(e) { return e && e.__esModule ? e : { "default": e }; }
/** This detects for the the browser defined in "testClient", with results overridden when "alwaysUse" is true.
Graphite will not work in Firefox if gfx.font_rendering.graphite.enabled has been changed to false in about:config.
See additional info in End Note [1] of README.md. */

function useAssumeGraphite(_ref) {
  var _ref$testClient = _ref.testClient,
    testClient = _ref$testClient === void 0 ? 'firefox' : _ref$testClient,
    _ref$alwaysUse = _ref.alwaysUse,
    alwaysUse = _ref$alwaysUse === void 0 ? false : _ref$alwaysUse;
  // eslint-disable-next-line react-hooks/exhaustive-deps
  var browserTest = (0, _react.useMemo)(function () {
    return navigator.userAgent.toLowerCase().indexOf(testClient) > -1;
  }, []);
  var isGraphiteAssumed = alwaysUse || browserTest;
  return isGraphiteAssumed;
}
;
useAssumeGraphite.propTypes = {
  /** name of browser to test */
  testClient: _propTypes["default"].string,
  /** skips browser test if true *(true is the same as not applying useAssumeGraphite)* */
  alwaysUse: _propTypes["default"].bool
};
useAssumeGraphite.defaultProps = {
  testClient: 'firefox',
  alwaysUse: false
};