Keeping track of the number of times that a shared module has been used and dertermining if it is to be included along with the other scripts.

1 files changed, 18 insertions, 0 deletions

diff --git a/config/webpack/loader/count-imports-loader.js b/config/webpack/loader/count-imports-loader.js
new file mode 100644
index 0000000..4c3faa4
--- /dev/null
+++ b/config/webpack/loader/count-imports-loader.js
@@ -0,0 +1,18 @@
+const { ImportManager } = require("import-manager");
+
+const sharedModules = webpackRequire("utils/shared-modules.js");
+
+module.exports = function(source) {
+	const { sharedModulesImportedCount } = this.getOptions();
+	const manager = new ImportManager(source);
+
+	for (const unit of manager.imports.es6.units) {
+		const moduleIndex = sharedModules.indexOf(unit.module.name);
+
+		if (moduleIndex >= 0) {
+			sharedModulesImportedCount[sharedModules[moduleIndex]]++;
+		}
+	}
+
+	return source;
+};