init commit

shared/logger/src/index.ts

@@ -0,0 +1,31 @@
+import { getContext } from 'svelte';
+import type { Logger, LoggerFactory } from './types';
+
+export * from './composite';
+export * from './console';
+export * from './deferred';
+export * from './recording';
+export * from './sampled';
+export * from './types';
+export * from './void';
+
+const CONTEXT_NAME = 'loggerFactory';
+
+export function setContext(
+    context: Map<string, unknown>,
+    factory: LoggerFactory,
+): void {
+    context.set(CONTEXT_NAME, factory);
+}
+
+export function loggerFor(subject: string): Logger {
+    const factory = getContext(CONTEXT_NAME) as LoggerFactory | undefined;
+
+    if (!factory) {
+        throw new Error(
+            'loggerFor called before setContext or outside of svelte component init',
+        );
+    }
+
+    return factory.loggerFor(subject);
+}