Add typescript types

libraries/o-error/index.d.ts

@@ -0,0 +1,58 @@
+export = OError;
+/**
+ * Light-weight helpers for handling JavaScript Errors in node.js and the
+ * browser.
+ */
+declare class OError extends Error {
+    /**
+     * Tag debugging information onto any error (whether an OError or not) and
+     * return it.
+     *
+     * @param {Error} error the error to tag
+     * @param {string} [message] message with which to tag `error`
+     * @param {Object} [info] extra data with wich to tag `error`
+     * @return {Error} the modified `error` argument
+     */
+    static tag(error: Error, message?: string, info?: any): Error;
+    /**
+     * The merged info from any `tag`s on the given error.
+     *
+     * If an info property is repeated, the last one wins.
+     *
+     * @param {Error | null | undefined} error any errror (may or may not be an `OError`)
+     * @return {Object}
+     */
+    static getFullInfo(error: Error): any;
+    /**
+     * Return the `stack` property from `error`, including the `stack`s for any
+     * tagged errors added with `OError.tag` and for any `cause`s.
+     *
+     * @param {Error | null | undefined} error any error (may or may not be an `OError`)
+     * @return {string}
+     */
+    static getFullStack(error: Error): string;
+    /**
+     * @param {string} message as for built-in Error
+     * @param {Object} [info] extra data to attach to the error
+     * @param {Error} [cause] the internal error that caused this error
+     */
+    constructor(message: string, info?: any, cause?: Error);
+    info: any;
+    cause: Error;
+    /** @private @type {Array<TaggedError>} */
+    private _oErrorTags;
+    /**
+     * Set the extra info object for this error.
+     *
+     * @param {Object | null | undefined} info extra data to attach to the error
+     * @return {this}
+     */
+    withInfo(info: any): OError;
+    /**
+     * Wrap the given error, which caused this error.
+     *
+     * @param {Error} cause the internal error that caused this error
+     * @return {this}
+     */
+    withCause(cause: Error): OError;
+}

libraries/o-error/package.json

@@ -3,11 +3,15 @@
   "version": "2.1.0",
   "description": "Make custom error types that pass `instanceof` checks, have stack traces, support custom messages and properties, and can wrap causes (like VError).",
   "main": "index.js",
+  "types": "index.d.ts",
   "scripts": {
     "lint": "eslint .",
     "update-readme": "doc/update-readme.js",
     "test": "mocha",
-    "typecheck": "tsc --allowJs --checkJs --noEmit --moduleResolution node --target ES6 *.js test/**/*.js"
+    "typecheck": "tsc --allowJs --checkJs --noEmit --moduleResolution node --target ES6 *.js test/**/*.js",
+    "declaration:build": "rm -f index.d.ts && tsc --allowJs --declaration --emitDeclarationOnly --moduleResolution node --target ES6 index.js",
+    "declaration:check": "git diff --exit-code -- index.d.ts",
+    "prepublishOnly": "npm run --silent declaration:build && npm run --silent declaration:check"
   },
   "author": "Overleaf (https://www.overleaf.com)",
   "license": "MIT",