GraphNG: replace bizcharts with uPlot for sparklines (#29632)

packages/grafana-data/src/vector/IndexVector.ts

@@ -0,0 +1,36 @@
+import { Field, FieldType } from '../types';
+import { FunctionalVector } from './FunctionalVector';
+
+/**
+ * IndexVector is a simple vector implementation that returns the index value
+ * for each element in the vector.  It is functionally equivolant a vector backed
+ * by an array with values: `[0,1,2,...,length-1]`
+ */
+export class IndexVector extends FunctionalVector<number> {
+  constructor(private len: number) {
+    super();
+  }
+
+  get length() {
+    return this.len;
+  }
+
+  get(index: number): number {
+    return index;
+  }
+
+  /**
+   * Returns a field representing the range [0 ... length-1]
+   */
+  static newField(len: number): Field<number> {
+    return {
+      name: '',
+      values: new IndexVector(len),
+      type: FieldType.number,
+      config: {
+        min: 0,
+        max: len - 1,
+      },
+    };
+  }
+}

packages/grafana-data/src/vector/index.ts

@@ -5,5 +5,6 @@ export * from './ConstantVector';
 export * from './BinaryOperationVector';
 export * from './SortedVector';
 export * from './FormattedVector';
+export * from './IndexVector';
 
 export { vectorator } from './FunctionalVector';