react app

react-app/node_modules/lodash/internal/createWrapper.js

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+var baseSetData = require('./baseSetData'),
+    createBindWrapper = require('./createBindWrapper'),
+    createHybridWrapper = require('./createHybridWrapper'),
+    createPartialWrapper = require('./createPartialWrapper'),
+    getData = require('./getData'),
+    mergeData = require('./mergeData'),
+    setData = require('./setData');
+
+/** Used to compose bitmasks for wrapper metadata. */
+var BIND_FLAG = 1,
+    BIND_KEY_FLAG = 2,
+    PARTIAL_FLAG = 32,
+    PARTIAL_RIGHT_FLAG = 64;
+
+/** Used as the `TypeError` message for "Functions" methods. */
+var FUNC_ERROR_TEXT = 'Expected a function';
+
+/* Native method references for those with the same name as other `lodash` methods. */
+var nativeMax = Math.max;
+
+/**
+ * Creates a function that either curries or invokes `func` with optional
+ * `this` binding and partially applied arguments.
+ *
+ * @private
+ * @param {Function|string} func The function or method name to reference.
+ * @param {number} bitmask The bitmask of flags.
+ *  The bitmask may be composed of the following flags:
+ *     1 - `_.bind`
+ *     2 - `_.bindKey`
+ *     4 - `_.curry` or `_.curryRight` of a bound function
+ *     8 - `_.curry`
+ *    16 - `_.curryRight`
+ *    32 - `_.partial`
+ *    64 - `_.partialRight`
+ *   128 - `_.rearg`
+ *   256 - `_.ary`
+ * @param {*} [thisArg] The `this` binding of `func`.
+ * @param {Array} [partials] The arguments to be partially applied.
+ * @param {Array} [holders] The `partials` placeholder indexes.
+ * @param {Array} [argPos] The argument positions of the new function.
+ * @param {number} [ary] The arity cap of `func`.
+ * @param {number} [arity] The arity of `func`.
+ * @returns {Function} Returns the new wrapped function.
+ */
+function createWrapper(func, bitmask, thisArg, partials, holders, argPos, ary, arity) {
+  var isBindKey = bitmask & BIND_KEY_FLAG;
+  if (!isBindKey && typeof func != 'function') {
+    throw new TypeError(FUNC_ERROR_TEXT);
+  }
+  var length = partials ? partials.length : 0;
+  if (!length) {
+    bitmask &= ~(PARTIAL_FLAG | PARTIAL_RIGHT_FLAG);
+    partials = holders = undefined;
+  }
+  length -= (holders ? holders.length : 0);
+  if (bitmask & PARTIAL_RIGHT_FLAG) {
+    var partialsRight = partials,
+        holdersRight = holders;
+
+    partials = holders = undefined;
+  }
+  var data = isBindKey ? undefined : getData(func),
+      newData = [func, bitmask, thisArg, partials, holders, partialsRight, holdersRight, argPos, ary, arity];
+
+  if (data) {
+    mergeData(newData, data);
+    bitmask = newData[1];
+    arity = newData[9];
+  }
+  newData[9] = arity == null
+    ? (isBindKey ? 0 : func.length)
+    : (nativeMax(arity - length, 0) || 0);
+
+  if (bitmask == BIND_FLAG) {
+    var result = createBindWrapper(newData[0], newData[2]);
+  } else if ((bitmask == PARTIAL_FLAG || bitmask == (BIND_FLAG | PARTIAL_FLAG)) && !newData[4].length) {
+    result = createPartialWrapper.apply(undefined, newData);
+  } else {
+    result = createHybridWrapper.apply(undefined, newData);
+  }
+  var setter = data ? baseSetData : setData;
+  return setter(result, newData);
+}
+
+module.exports = createWrapper;