added definitions for icss-utils (#36052)

types/icss-utils/icss-utils-tests.ts

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+import { replaceValueSymbols, replaceSymbols, extractICSS, createICSSRules } from "icss-utils";
+import postcss = require("postcss");
+
+const root = postcss.parse("a#css.string { color: red }");
+
+const replacements = {
+    quick: "slow",
+    lazy: "energetic",
+};
+
+const s: string = replaceValueSymbols("The quick brown fox jumps over the lazy dog.", replacements);
+
+replaceSymbols(root, replacements);
+
+const { icssImports, icssExports } = extractICSS(root);
+const s2: string = icssImports.monkey.bagel;
+const s3: string = icssExports.foo;
+
+extractICSS(root, false);
+
+const rules: postcss.Rule[] = createICSSRules(icssImports, icssExports);

types/icss-utils/index.d.ts

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+// Type definitions for icss-utils 4.1
+// Project: https://github.com/css-modules/icss-utils#readme
+// Definitions by: Bob Matcuk <https://github.com/bmatcuk>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 2.2
+
+import { Container, Rule } from "postcss";
+
+export interface Replacements {
+    [key: string]: string;
+}
+
+export interface CSSImports {
+    [key: string]: { [key: string]: string };
+}
+
+export interface CSSExports {
+    [key: string]: string;
+}
+
+export interface ExtractedICSS {
+    icssImports: CSSImports;
+    icssExports: CSSExports;
+}
+
+export function replaceValueSymbols(value: string, replacements: Replacements): string;
+
+export function replaceSymbols(css: Container, replacements: Replacements): void;
+
+export function extractICSS(css: Container, removeRules?: boolean): ExtractedICSS;
+
+export function createICSSRules(imports: CSSImports, exports: CSSExports): Rule[];

types/icss-utils/package.json

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+{
+    "private": true,
+    "dependencies": {
+        "postcss": "^7.0.0"
+    }
+}

types/icss-utils/tsconfig.json

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

types/icss-utils/tslint.json

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