Initial

Client/node_modules/vscode-languageserver-protocol/lib/utils/is.d.ts

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+export declare function boolean(value: any): value is boolean;
+export declare function string(value: any): value is string;
+export declare function number(value: any): value is number;
+export declare function error(value: any): value is Error;
+export declare function func(value: any): value is Function;
+export declare function array<T>(value: any): value is T[];
+export declare function stringArray(value: any): value is string[];
+export declare function typedArray<T>(value: any, check: (value: any) => boolean): value is T[];
+export declare function thenable<T>(value: any): value is Thenable<T>;

Client/node_modules/vscode-languageserver-protocol/lib/utils/is.js

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+/* --------------------------------------------------------------------------------------------
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for license information.
+ * ------------------------------------------------------------------------------------------ */
+'use strict';
+Object.defineProperty(exports, "__esModule", { value: true });
+function boolean(value) {
+    return value === true || value === false;
+}
+exports.boolean = boolean;
+function string(value) {
+    return typeof value === 'string' || value instanceof String;
+}
+exports.string = string;
+function number(value) {
+    return typeof value === 'number' || value instanceof Number;
+}
+exports.number = number;
+function error(value) {
+    return value instanceof Error;
+}
+exports.error = error;
+function func(value) {
+    return typeof value === 'function';
+}
+exports.func = func;
+function array(value) {
+    return Array.isArray(value);
+}
+exports.array = array;
+function stringArray(value) {
+    return array(value) && value.every(elem => string(elem));
+}
+exports.stringArray = stringArray;
+function typedArray(value, check) {
+    return Array.isArray(value) && value.every(check);
+}
+exports.typedArray = typedArray;
+function thenable(value) {
+    return value && func(value.then);
+}
+exports.thenable = thenable;