ref: Remove dom references from utils for old TS and env interop

Author: kamilogorek

packages/utils/src/is.ts

@@ -1,5 +1,3 @@
-/// <reference lib="dom" />
-
 /**
  * Checks whether given value's type is one of a few Error or Error-like
  * {@link isError}.
@@ -93,7 +91,7 @@ export function isPlainObject(wat: any): boolean {
  * @param wat A value to be checked.
  * @returns A boolean representing the result.
  */
-export function isEvent(wat: any): wat is Event {
+export function isEvent(wat: any): boolean {
   // tslint:disable-next-line:strict-type-predicates
   return typeof Event !== 'undefined' && wat instanceof Event;
 }
@@ -105,7 +103,7 @@ export function isEvent(wat: any): wat is Event {
  * @param wat A value to be checked.
  * @returns A boolean representing the result.
  */
-export function isElement(wat: any): wat is Element {
+export function isElement(wat: any): boolean {
   // tslint:disable-next-line:strict-type-predicates
   return typeof Element !== 'undefined' && wat instanceof Element;
 }

packages/utils/src/misc.ts

@@ -1,5 +1,3 @@
-/// <reference lib="dom" />
-
 import { Event, Integration, WrappedFunction } from '@sentry/types';
 
 import { isString } from './is';
@@ -258,13 +256,17 @@ export function getLocationHref(): string {
  * e.g. [HTMLElement] => body > div > input#foo.btn[name=baz]
  * @returns generated DOM path
  */
-export function htmlTreeAsString(elem: Node): string {
+export function htmlTreeAsString(elem: unknown): string {
+  type SimpleNode = {
+    parentNode: SimpleNode;
+  } | null;
+
   // try/catch both:
   // - accessing event.target (see getsentry/raven-js#838, #768)
   // - `htmlTreeAsString` because it's complex, and just accessing the DOM incorrectly
   // - can throw an exception in some circumstances.
   try {
-    let currentElem: Node | null = elem;
+    let currentElem = elem as SimpleNode;
     const MAX_TRAVERSE_HEIGHT = 5;
     const MAX_OUTPUT_LEN = 80;
     const out = [];
@@ -275,7 +277,7 @@ export function htmlTreeAsString(elem: Node): string {
     let nextStr;
 
     while (currentElem && height++ < MAX_TRAVERSE_HEIGHT) {
-      nextStr = _htmlElementAsString(currentElem as HTMLElement);
+      nextStr = _htmlElementAsString(currentElem);
       // bail out if
       // - nextStr is the 'html' element
       // - the length of the string that would be created exceeds MAX_OUTPUT_LEN
@@ -301,7 +303,14 @@ export function htmlTreeAsString(elem: Node): string {
  * e.g. [HTMLElement] => input#foo.btn[name=baz]
  * @returns generated DOM path
  */
-function _htmlElementAsString(elem: HTMLElement): string {
+function _htmlElementAsString(el: unknown): string {
+  const elem = el as {
+    getAttribute(key: string): string; // tslint:disable-line:completed-docs
+    tagName?: string;
+    id?: string;
+    className?: string;
+  };
+
   const out = [];
   let className;
   let classes;

packages/utils/src/object.ts

@@ -99,37 +99,49 @@ function getWalkSource(
   }
 
   if (isEvent(value)) {
+    /**
+     * Event-like interface that's usable in browser and node
+     */
+    interface SimpleEvent {
+      [key: string]: unknown;
+      type: string;
+      target?: unknown;
+      currentTarget?: unknown;
+    }
+
+    const event = value as SimpleEvent;
+
     const source: {
       [key: string]: any;
     } = {};
 
-    source.type = value.type;
+    source.type = event.type;
 
     // Accessing event.target can throw (see getsentry/raven-js#838, #768)
     try {
-      source.target = isElement(value.target)
-        ? htmlTreeAsString(value.target)
-        : Object.prototype.toString.call(value.target);
+      source.target = isElement(event.target)
+        ? htmlTreeAsString(event.target)
+        : Object.prototype.toString.call(event.target);
     } catch (_oO) {
       source.target = '<unknown>';
     }
 
     try {
-      source.currentTarget = isElement(value.currentTarget)
-        ? htmlTreeAsString(value.currentTarget)
-        : Object.prototype.toString.call(value.currentTarget);
+      source.currentTarget = isElement(event.currentTarget)
+        ? htmlTreeAsString(event.currentTarget)
+        : Object.prototype.toString.call(event.currentTarget);
     } catch (_oO) {
       source.currentTarget = '<unknown>';
     }
 
     // tslint:disable-next-line:strict-type-predicates
     if (typeof CustomEvent !== 'undefined' && value instanceof CustomEvent) {
-      source.detail = value.detail;
+      source.detail = event.detail;
     }
 
-    for (const i in value) {
-      if (Object.prototype.hasOwnProperty.call(value, i)) {
-        source[i] = (value as { [key: string]: any })[i];
+    for (const i in event) {
+      if (Object.prototype.hasOwnProperty.call(event, i)) {
+        source[i] = event;
       }
     }