Move internal modules to “internal” folder.

.internal/baseMatchesProperty.js

@@ -0,0 +1,33 @@
+import baseIsEqual from './.internal/baseIsEqual.js';
+import get from './get.js';
+import hasIn from './hasIn.js';
+import isKey from './.internal/isKey.js';
+import isStrictComparable from './.internal/isStrictComparable.js';
+import matchesStrictComparable from './.internal/matchesStrictComparable.js';
+import toKey from './.internal/toKey.js';
+
+/** Used to compose bitmasks for value comparisons. */
+const COMPARE_PARTIAL_FLAG = 1;
+const COMPARE_UNORDERED_FLAG = 2;
+
+/**
+ * The base implementation of `matchesProperty` which doesn't clone `srcValue`.
+ *
+ * @private
+ * @param {string} path The path of the property to get.
+ * @param {*} srcValue The value to match.
+ * @returns {Function} Returns the new spec function.
+ */
+function baseMatchesProperty(path, srcValue) {
+  if (isKey(path) && isStrictComparable(srcValue)) {
+    return matchesStrictComparable(toKey(path), srcValue);
+  }
+  return object => {
+    const objValue = get(object, path);
+    return (objValue === undefined && objValue === srcValue)
+      ? hasIn(object, path)
+      : baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG);
+  };
+}
+
+export default baseMatchesProperty;