Allows setting metal compatibility mode via a global variable - Fixes #…

…159
metal · Sep 21, 2016 · 7d818c0 · 7d818c0
1 parent b495e94
commit 7d818c0
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Showing 2 changed files with 17 additions and 0 deletions.
diff --git a/packages/metal/src/core.js b/packages/metal/src/core.js
@@ -71,6 +71,12 @@ class core {
 	 * @return {Object}
 	 */
 	static getCompatibilityModeData() {
+		// Compatibility mode can be set via the __METAL_COMPATIBILITY__ global var.
+		if (!compatibilityModeData_) {
+			if (typeof window !== 'undefined' && window.__METAL_COMPATIBILITY__) {
+				core.enableCompatibilityMode(window.__METAL_COMPATIBILITY__);
+			}
+		}
 		return compatibilityModeData_;
 	}
 

diff --git a/packages/metal/test/core.js b/packages/metal/test/core.js
@@ -267,6 +267,11 @@ describe('core', function() {
 	});
 
 	describe('Compatibility Mode', function() {
+		afterEach(function() {
+			delete window.__METAL_COMPATIBILITY__;
+			core.disableCompatibilityMode();
+		});
+
 		it('should return no data if compatibility mode is not enabled', function() {
 			assert.ok(!core.getCompatibilityModeData());
 		});
@@ -277,6 +282,12 @@ describe('core', function() {
 			assert.strictEqual(data, core.getCompatibilityModeData());
 		});
 
+		it('should return the data specified by global var', function() {
+			const data = {};
+			window.__METAL_COMPATIBILITY__ = data;
+			assert.strictEqual(data, core.getCompatibilityModeData());
+		});
+
 		it('should return no data if compatibility mode is disabled', function() {
 			const data = {};
 			core.enableCompatibilityMode(data);