Merge pull request #17512 from selkinvitaly/master

added typings for bem-cn

types/bem-cn/bem-cn-tests.ts

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+import * as block from "bem-cn";
+
+// expected 'block'
+block("block")();
+
+// expected 'block__elem'
+block("block")("elem")();
+
+// expected 'block__elem block__elem_disabled block__elem_size_small'
+block("block")("elem", { disabled: true, size: 'small' })();
+
+// expected 'block block_disabled'
+block("block")({ disabled: true})();
+
+// expected 'block mix'
+block("block").mix("mix");
+
+// expected 'block mix mix2'
+block("block").mix(["mix", "mix2"]);
+
+// expected 'block is-hidden'
+block("block").state({ hidden: true });
+
+// expected 'block'
+block("block").state({ hidden: false });
+
+// expected 'block is-hidden is-error'
+block("block").state({ hidden: true, error: true });
+
+// expected 'block is-loading'
+block("block").is({ loading: true });
+
+// expected 'block has-content'
+block("block").has({ content: true });
+
+block.setup({
+    el: '~~',
+    mod: '--',
+    modValue: '-'
+});
+
+// expected 'block~~elem'
+block("block")("elem");
+
+// expected 'block block--mod-value'
+block("block")({ mod: "value"});

types/bem-cn/index.d.ts

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+// Type definitions for bem-cn 2.1
+// Project: https://github.com/albburtsev/bem-cn
+// Definitions by: Vitaly Selkin <https://github.com/selkinvitaly>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+type StateFn = (states: { [key: string]: boolean }) => Inner;
+
+interface Modifications {
+    [key: string]: (string | boolean);
+}
+
+interface Block {
+    (name: string): Inner;
+
+    reset(): void;
+    setup(settings?: Settings): void;
+}
+
+interface Inner {
+    (elem: string | Modifications): Inner;
+    (elem: string, mods: Modifications): Inner;
+    (): string;
+
+    mix(mixes: string | string[]): Inner;
+    has: StateFn;
+    state: StateFn;
+    is: StateFn;
+    toString(): string;
+    split(separator: string, limit?: number): string[];
+}
+
+interface Settings {
+    ns?: string;
+    el?: string;
+    mod?: string;
+    modValue?: string;
+    classMap?: { [className: string]: string } | null;
+}
+
+declare const block: Block;
+export = block;

types/bem-cn/tsconfig.json

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+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": [
+            "es6"
+        ],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictNullChecks": true,
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts",
+        "bem-cn-tests.ts"
+    ]
+}

types/bem-cn/tslint.json

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+{
+    "extends": "dtslint/dt.json"
+}