First commit.

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

client/node_modules/langium/lib/lsp/completion/follow-element-computation.d.ts

@@ -0,0 +1,39 @@
+/******************************************************************************
+ * 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.
+ ******************************************************************************/
+import type { IToken } from 'chevrotain';
+import * as ast from '../../languages/generated/ast.js';
+export interface NextFeature<T extends ast.AbstractElement = ast.AbstractElement> {
+    /**
+     * A feature that could appear during completion.
+     */
+    feature: T;
+    /**
+     * The type that carries this `feature`. Only set if we encounter a new type.
+     */
+    type?: string;
+    /**
+     * The container property for the new `type`
+     */
+    property?: string;
+}
+/**
+ * Calculates any features that can follow the given feature stack.
+ * This also includes features following optional features and features from previously called rules that could follow the last feature.
+ * @param featureStack A stack of features starting at the entry rule and ending at the feature of the current cursor position.
+ * @param unparsedTokens All tokens which haven't been parsed successfully yet. This is the case when we call this function inside an alternative or before parsing any tokens.
+ * @returns Any `AbstractElement` that could be following the given feature stack.
+ */
+export declare function findNextFeatures(featureStack: NextFeature[][], unparsedTokens: IToken[]): NextFeature[];
+/**
+ * Calculates the first child feature of any `AbstractElement`.
+ * @param next The `AbstractElement` whose first child features should be calculated.
+ */
+export declare function findFirstFeatures(next: ast.AbstractElement): NextFeature[][];
+export declare function findGroupAndChild(feature: ast.AbstractElement): {
+    group: ast.Group | undefined;
+    child: ast.AbstractElement;
+};
+//# sourceMappingURL=follow-element-computation.d.ts.map