react-native-gesture-handler/lib/module/web_hammer/utils.js

Declarative API exposing native platform touch and gesture system to React Native

// TODO(TS) remove if not necessary after rewrite
export const isnan = v => Number.isNaN(v); // TODO(TS) remove if not necessary after rewrite

export const isValidNumber = v => typeof v === 'number' && !Number.isNaN(v);
export const TEST_MIN_IF_NOT_NAN = (value, limit) => !isnan(limit) && (limit < 0 && value <= limit || limit >= 0 && value >= limit);
export const VEC_LEN_SQ = ({
  x = 0,
  y = 0
} = {}) => x * x + y * y;
export const TEST_MAX_IF_NOT_NAN = (value, max) => !isnan(max) && (max < 0 && value < max || max >= 0 && value > max);
export function fireAfterInterval(method, interval) {
  if (!interval) {
    method();
    return null;
  }

  return setTimeout(() => method(), interval);
}
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