feat: export provider context for class components to use (#38)

Author: waltjones

index.d.ts

@@ -1,5 +1,6 @@
-import { Component, ReactNode } from "react";
+import { Component, Context as ReactContext, ReactNode } from "react";
 import Rollbar, { Callback, Configuration } from "rollbar";
+import { RollbarInstance, BaseOptions, RollbarCtor } from "./src/provider";
 
 export const LEVEL_DEBUG = "debug";
 export const LEVEL_INFO = "info";
@@ -53,6 +54,15 @@ interface ProviderState {
 
 export class Provider extends Component<ProviderProps, ProviderState> {}
 
+interface ContextInterface {
+  [RollbarInstance]: Rollbar;
+  [BaseOptions]: Configuration;
+  [RollbarCtor]: new (options: Configuration) => Rollbar;
+}
+
+export const Context: ReactContext<ContextInterface>;
+
+export function getRollbarFromContext(context: Context): Rollbar;
 export function useRollbar(): Rollbar;
 export function useRollbarConfiguration(config: Rollbar.Configuration): void;
 export function useRollbarContext(ctx?: string, isLayout?: boolean): void;

src/index.js

@@ -1,6 +1,6 @@
 export { LEVEL_DEBUG, LEVEL_INFO, LEVEL_WARN, LEVEL_ERROR, LEVEL_CRITICAL } from './constants';
 export { historyContext } from './history-context';
-export { Provider } from './provider';
+export { Provider, Context, getRollbarFromContext } from './provider';
 export { ErrorBoundary } from './error-boundary';
 export { RollbarContext } from './rollbar-context';
 export { isValidLevel } from './utils';

src/provider.js

@@ -8,9 +8,9 @@ import { isRollbarInstance } from './utils';
 export const Context = createContext();
 Context.displayName = 'Rollbar';
 
-const RollbarInstance = Symbol('RollbarInstance');
-const BaseOptions = Symbol('BaseOptions');
-const RollbarCtor = Symbol('RollbarCtor');
+export const RollbarInstance = Symbol('RollbarInstance');
+export const BaseOptions = Symbol('BaseOptions');
+export const RollbarCtor = Symbol('RollbarCtor');
 
 export function getRollbarFromContext(context) {
   const { [RollbarInstance]: rollbar } = context;