🤖 Merge PR #46019 feat(is-secret): new type definition by @peterblazejewicz

This is a redo of staled #45475
The original PR author is listed here as the owner.
This commit redos details of original PR as per comments
- use default exports as per DT template and Don't/Do's
- use default `tslint.json` without non essential overrides

/cc @wrumsby

https://github.com/watson/is-secret#readme

Thanks!

types/is-secret/index.d.ts

@@ -0,0 +1,23 @@
+// Type definitions for is-secret 1.2
+// Project: https://github.com/watson/is-secret#readme
+// Definitions by: Walter Rumsby <https://github.com/wrumsby>
+//                 Piotr Błażejewicz <https://github.com/peterblazejewicz>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+/**
+ * A distributed maintained collection of patterns that indicate that something probably is secret.
+ * This is useful if you want to filter sensitive values in a data set.
+ * This module uses a very simple algorithm that will not catch everything. Use at your own risk.
+ */
+
+/**
+ * Validates the given string against a list of key names known to typically indicate secret data.
+ * Returns `true` if the string is considered secret. Otherwise `false`.
+ */
+export function key(str: string): boolean;
+
+/**
+ * Validates the given string against a list of patterns that indicates secret data.
+ * Returns `true` if the string is considered secret. Otherwise `false`.
+ */
+export function value(str: string): boolean;

types/is-secret/is-secret-tests.ts

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+import isSecret = require('is-secret');
+
+interface Data {
+    username: string;
+    password: string;
+    card: string;
+}
+
+const data: Data = {
+    username: 'watson',
+    password: 'f8bY2fg8',
+    card: '1234 1234 1234 1234', // credit card number
+};
+
+if (isSecret.key('password') || isSecret.value(data.password)) {
+    data.password = '********';
+}
+
+isSecret.key('secret-key'); // $ExpectType boolean
+isSecret.value('secret-value'); // $ExpectType boolean

types/is-secret/tsconfig.json

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

types/is-secret/tslint.json

@@ -0,0 +1 @@
+{ "extends": "dtslint/dt.json" }