[json-stringify-safe] add typings (#19026)

types/json-stringify-safe/index.d.ts

@@ -0,0 +1,14 @@
+// Type definitions for json-stringify-safe 5.0
+// Project: https://github.com/isaacs/json-stringify-safe
+// Definitions by: BendingBender <https://github.com/BendingBender>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+export = stringify;
+
+declare function stringify(obj: any, serializer?: stringify.EntryProcessor | null, indent?: string | number | null, decycler?: stringify.EntryProcessor): string;
+
+declare namespace stringify {
+    function getSerialize(serializer: EntryProcessor | null, decycler?: EntryProcessor): EntryProcessor;
+
+    type EntryProcessor = (key: string, value: any) => any;
+}

types/json-stringify-safe/json-stringify-safe-tests.ts

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+import stringify = require('json-stringify-safe');
+
+interface CircularObj {
+    circularRef?: CircularObj;
+    list?: CircularObj[];
+}
+
+const circularObj: CircularObj = {};
+circularObj.circularRef = circularObj;
+circularObj.list = [circularObj, circularObj];
+
+stringify(circularObj);
+stringify(circularObj, null);
+stringify(circularObj, null, 2);
+stringify(circularObj, null, null, () => {});
+stringify(circularObj, (key, val) => {
+    key; // $ExpectType string
+    val; // $ExpectType any
+}, null, (key, val) => {
+    key; // $ExpectType string
+    val; // $ExpectType any
+});
+
+// $ExpectType EntryProcessor
+stringify.getSerialize(null, (key, val) => {
+    key; // $ExpectType string
+    val; // $ExpectType any
+});
+stringify.getSerialize((key, val) => {
+    key; // $ExpectType string
+    val; // $ExpectType any
+});
+stringify.getSerialize((key, val) => {
+    key; // $ExpectType string
+    val; // $ExpectType any
+}, (key, val) => {
+    key; // $ExpectType string
+    val; // $ExpectType any
+});

types/json-stringify-safe/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",
+        "json-stringify-safe-tests.ts"
+    ]
+}

types/json-stringify-safe/tslint.json

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