planning

node_modules/@react-dnd/invariant/test/development.spec.ts

@@ -0,0 +1,35 @@
+import invariant from '../src';
+
+describe('development mode', () => {
+  const OLD_ENV = process.env;
+
+  beforeEach(() => {
+    jest.resetModules(); // this is important - it clears the cache
+    process.env = { ...OLD_ENV };
+    delete process.env.NODE_ENV;
+  });
+
+  afterEach(() => {
+    process.env = OLD_ENV;
+  });
+
+  it('works', () => {
+    process.env.NODE_ENV = 'development';
+
+    expect(function() {
+      invariant(true, 'invariant message');
+    }).not.toThrow();
+
+    expect(function() {
+      invariant(false, 'invariant message');
+    }).toThrow(/invariant message/);
+
+    expect(function() {
+      (invariant as any)(true);
+    }).toThrow(/requires an error/i);
+
+    expect(function() {
+      (invariant as any)(false);
+    }).toThrow(/requires an error/i);
+  });
+});

node_modules/@react-dnd/invariant/test/production.spec.ts

@@ -0,0 +1,35 @@
+import invariant from '../src';
+
+describe('production mode', () => {
+  const OLD_ENV = process.env;
+
+  beforeEach(() => {
+    jest.resetModules(); // this is important - it clears the cache
+    process.env = { ...OLD_ENV };
+    delete process.env.NODE_ENV;
+  });
+
+  afterEach(() => {
+    process.env = OLD_ENV;
+  });
+
+  it('works', () => {
+    process.env.NODE_ENV = 'production';
+
+    expect(function() {
+      invariant(true, 'invariant message');
+    }).not.toThrow();
+
+    expect(function() {
+      invariant(false, 'invariant message');
+    }).toThrow(/invariant message/);
+
+    expect(function() {
+      (invariant as any)(true);
+    }).not.toThrow();
+
+    expect(function() {
+      (invariant as any)(false);
+    }).toThrow(/minified exception occurred/i);
+  });
+});