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node_modules/es5-ext/function/#/to-string-tokens.js

@@ -0,0 +1,52 @@
+"use strict";
+
+var isValue       = require("../../object/is-value")
+  , esniff        = require("esniff")
+  , validFunction = require("../valid-function");
+
+var classRe = /^\s*class[\s{/}]/;
+
+module.exports = function () {
+	var str = String(validFunction(this));
+	if (classRe.test(str)) throw new Error("Class methods are not supported");
+
+	var argsStartIndex
+	  , argsEndIndex
+	  , bodyStartIndex
+	  , bodyEndReverseIndex = -1
+	  , shouldTrimArgs = false;
+
+	esniff(str, function (emitter, accessor) {
+		emitter.once("trigger:(", function () { argsStartIndex = accessor.index + 1; });
+		emitter.once("trigger:=", function () {
+			if (isValue(argsStartIndex)) return;
+			argsStartIndex = 0;
+			argsEndIndex = accessor.index;
+			shouldTrimArgs = true;
+			if (!accessor.skipCodePart("=>")) {
+				throw new Error("Unexpected function string: " + str);
+			}
+			accessor.skipWhitespace();
+			if (!accessor.skipCodePart("{")) bodyEndReverseIndex = Infinity;
+			bodyStartIndex = accessor.index;
+		});
+		emitter.on("trigger:)", function () {
+			if (accessor.scopeDepth) return;
+			argsEndIndex = accessor.index;
+			accessor.skipCodePart(")");
+			accessor.skipWhitespace();
+			if (accessor.skipCodePart("=>")) {
+				accessor.skipWhitespace();
+				if (!accessor.skipCodePart("{")) bodyEndReverseIndex = Infinity;
+			} else if (!accessor.skipCodePart("{")) {
+				throw new Error("Unexpected function string: " + str);
+			}
+			bodyStartIndex = accessor.index;
+			accessor.stop();
+		});
+	});
+
+	var argsString = str.slice(argsStartIndex, argsEndIndex);
+	if (shouldTrimArgs) argsString = argsString.trim();
+	return { args: argsString, body: str.slice(bodyStartIndex, bodyEndReverseIndex) };
+};