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node_modules/vega-lite/build/src/compile/data/density.js

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+import { __rest } from "tslib";
+import { duplicate, hash } from '../../util';
+import { DataFlowNode } from './dataflow';
+/**
+ * A class for density transform nodes
+ */
+export class DensityTransformNode extends DataFlowNode {
+    constructor(parent, transform) {
+        var _a, _b, _c;
+        super(parent);
+        this.transform = transform;
+        this.transform = duplicate(transform); // duplicate to prevent side effects
+        const specifiedAs = (_a = this.transform.as) !== null && _a !== void 0 ? _a : [undefined, undefined];
+        this.transform.as = [(_b = specifiedAs[0]) !== null && _b !== void 0 ? _b : 'value', (_c = specifiedAs[1]) !== null && _c !== void 0 ? _c : 'density'];
+    }
+    clone() {
+        return new DensityTransformNode(null, duplicate(this.transform));
+    }
+    dependentFields() {
+        var _a;
+        return new Set([this.transform.density, ...((_a = this.transform.groupby) !== null && _a !== void 0 ? _a : [])]);
+    }
+    producedFields() {
+        return new Set(this.transform.as);
+    }
+    hash() {
+        return `DensityTransform ${hash(this.transform)}`;
+    }
+    assemble() {
+        const _a = this.transform, { density } = _a, rest = __rest(_a, ["density"]);
+        const result = Object.assign({ type: 'kde', field: density }, rest);
+        return result;
+    }
+}
+//# sourceMappingURL=density.js.map