mezzanine/es/decorators.js

Fantasy land union types with pattern matching

export function mergeTemplateArgs(strings, ...values) {
  var stringsLn = strings.length;
  var hasValues = stringsLn > 1;
  if (!hasValues) return strings;
  var pairsCount = stringsLn - 1;
  var fullLength = pairsCount * 2 + 1;
  var result = Array(fullLength);
  result[fullLength - 1] = strings[stringsLn - 1];
  for (var i = 0, j = 0; i < pairsCount; i++, j += 2) {
    result[j] = strings[i];
    result[j + 1] = values[i];
  }
  return result;
}

export var rename = name => fn => {
  var nameDescriptor = Object.getOwnPropertyDescriptor(fn, 'name');
  nameDescriptor.value = name;
  Object.defineProperty(fn, 'name', nameDescriptor);
  return fn;
};
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