add integration boilerplate

Author: Lms24

packages/browser/src/integrations/contextlines.ts

@@ -0,0 +1,49 @@
+import type { Event, EventProcessor, Integration } from '@sentry/types';
+
+interface ContextLinesOptions {
+  /**
+   * Sets the number of context lines for each frame when loading a file.
+   * Defaults to 7.
+   *
+   * Set to 0 to disable loading and inclusion of source files.
+   **/
+  frameContextLines?: number;
+}
+
+/**
+ * Collects source context lines around the line of a stackframe
+ * This integration only works for stack frames pointing to JS that's directly embedded
+ * in HTML files.
+ * It DOES NOT work for stack frames pointing to JS files that are loaded by the browser.
+ * For frames pointing to files, context lines are added during ingestino and symbolication
+ * by attempting to download the JS files to the Sentry backend.
+ */
+export class ContextLines implements Integration {
+  /**
+   * @inheritDoc
+   */
+  public static id: string = 'ContextLines';
+
+  /**
+   * @inheritDoc
+   */
+  public name: string = ContextLines.id;
+
+  public constructor(
+    private readonly _options: ContextLinesOptions = {
+      frameContextLines: 0,
+    },
+  ) {}
+
+  /**
+   * @inheritDoc
+   */
+  public setupOnce(addGlobalEventProcessor: (callback: EventProcessor) => void): void {
+    addGlobalEventProcessor(event => this.addSourceContext(event));
+  }
+
+  /** Processes an event and adds context lines */
+  public addSourceContext(event: Event): Event {
+    return event;
+  }
+}

packages/browser/src/integrations/index.ts

@@ -4,3 +4,4 @@ export { Breadcrumbs } from './breadcrumbs';
 export { LinkedErrors } from './linkederrors';
 export { HttpContext } from './httpcontext';
 export { Dedupe } from './dedupe';
+export { ContextLines } from './contextlines';