flow like the river

BACK_BACK/node_modules/@parcel/watcher/src/options.js

@@ -0,0 +1,39 @@
+function type(options) {
+  return Object.prototype.toString.call(options).slice(8, -1);
+}
+
+function encode(options) {
+  if (options && options.ignored) {
+    const ignoredType = type(options.ignored);
+    if (ignoredType !== 'Array') {
+      options.ignored = [options.ignored];
+    }
+
+    options.ignored.forEach((value, index) => {
+      const valueType = type(value);
+      if (valueType === 'RegExp') {
+        options.ignored[index] = value.source;
+        if (!options._regIndexs) {
+          options._regIndexs = [];
+        }
+        options._regIndexs.push(index);
+      }
+    });
+  }
+
+  return options;
+}
+
+function decode(options) {
+  if (options && options.ignored && options._regIndexs) {
+    for (let index of options._regIndexs) {
+      options.ignored[index] = new RegExp(options.ignored[index]);
+    }
+    delete options._regIndexs;
+  }
+
+  return options;
+}
+
+exports.encode = encode;
+exports.decode = decode;