First commit.

Signed-off-by: Chen Xiao <abigwc@gmail.com>

client/node_modules/langium/lib/utils/regexp-utils.d.ts

@@ -0,0 +1,33 @@
+/******************************************************************************
+ * Copyright 2021 TypeFox GmbH
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License, which is available in the project root.
+ ******************************************************************************/
+export declare const NEWLINE_REGEXP: RegExp;
+export declare function getTerminalParts(regexp: RegExp | string): Array<{
+    start: string;
+    end: string;
+}>;
+export declare function isMultilineComment(regexp: RegExp | string): boolean;
+/**
+ * A set of all characters that are considered whitespace by the '\s' RegExp character class.
+ * Taken from [MDN](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_expressions/Character_classes).
+ */
+export declare const whitespaceCharacters: string[];
+export declare function isWhitespace(value: RegExp | string): boolean;
+export declare function escapeRegExp(value: string): string;
+/**
+ * Determines whether the given input has a partial match with the specified regex.
+ * @param regex The regex to partially match against
+ * @param input The input string
+ * @returns Whether any match exists.
+ */
+export declare function partialMatches(regex: RegExp | string, input: string): boolean;
+/**
+ * Builds a partial regex from the input regex. A partial regex is able to match incomplete input strings. E.g.
+ * a partial regex constructed from `/ab/` is able to match the string `a` without needing a following `b` character. However it won't match `b` alone.
+ * @param regex The input regex to be converted.
+ * @returns A partial regex constructed from the input regex.
+ */
+export declare function partialRegExp(regex: RegExp | string): RegExp;
+//# sourceMappingURL=regexp-utils.d.ts.map