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node_modules/@11ty/eleventy-img/src/defer-counter.js

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+class DeferCounter {
+  constructor() {
+    this.resetCount();
+  }
+
+  resetCount() {
+    this.deferCount = 0;
+    this.inputs = new Map();
+  }
+
+  getCount() {
+    return this.deferCount;
+  }
+
+  increment(input) {
+    if(input) {
+      if(this.inputs.has(input)) {
+        return;
+      }
+      this.inputs.set(input, true);
+    }
+
+    this.deferCount++;
+  }
+}
+
+module.exports = DeferCounter;