refactor console verbosity and internal env handling

app/__test__/core/env.spec.ts

@@ -0,0 +1,35 @@
+import { describe, expect, test } from "bun:test";
+import { env, is_toggled } from "core/env";
+
+describe("env", () => {
+   test("is_toggled", () => {
+      expect(is_toggled("true")).toBe(true);
+      expect(is_toggled("1")).toBe(true);
+      expect(is_toggled("false")).toBe(false);
+      expect(is_toggled("0")).toBe(false);
+      expect(is_toggled(true)).toBe(true);
+      expect(is_toggled(false)).toBe(false);
+      expect(is_toggled(undefined)).toBe(false);
+      expect(is_toggled(null)).toBe(false);
+      expect(is_toggled(1)).toBe(true);
+      expect(is_toggled(0)).toBe(false);
+      expect(is_toggled("anything else")).toBe(false);
+   });
+
+   test("env()", () => {
+      expect(env("cli_log_level", undefined, { source: {} })).toBeUndefined();
+      expect(env("cli_log_level", undefined, { source: { BKND_CLI_LOG_LEVEL: "log" } })).toBe(
+         "log" as any,
+      );
+      expect(env("cli_log_level", undefined, { source: { BKND_CLI_LOG_LEVEL: "LOG" } })).toBe(
+         "log" as any,
+      );
+      expect(
+         env("cli_log_level", undefined, { source: { BKND_CLI_LOG_LEVEL: "asdf" } }),
+      ).toBeUndefined();
+
+      expect(env("modules_debug", undefined, { source: {} })).toBeFalse();
+      expect(env("modules_debug", undefined, { source: { BKND_MODULES_DEBUG: "1" } })).toBeTrue();
+      expect(env("modules_debug", undefined, { source: { BKND_MODULES_DEBUG: "0" } })).toBeFalse();
+   });
+});