Implements tryEval.

data-extraction/src/js/helpers/index.ts

@@ -1,2 +1,3 @@
 export * from "./createGraph";
 export * from "./createGraphFromPointers";
+export * from "./tryEval";

data-extraction/src/js/helpers/tryEval.ts

@@ -0,0 +1,48 @@
+import { DataExtractorApiImpl } from "../api/DataExtractorApiImpl";
+
+/**
+ * Takes an object and eval's its values.
+ * Each successfully evaluated value is added to the result object,
+ * its original key is used as key in the result object.
+ *
+ * # Example
+ * ```
+ * const x = 1;
+ * tryEval({ val1: "x", val2: "x y" })
+ * // -> { val1: 1 }
+ * ```
+ */
+export function tryEval(obj: Record<string, string>): Record<string, unknown>;
+/**
+ * Takes an array of strings and eval's its items.
+ * Each successfully evaluated value is added to the result object,
+ * its original value is used as key.
+ *
+ * # Example
+ * ```
+ * const x = 1;
+ * tryEval(["x", "y", "a a", "x + 2"])
+ * // -> { x: 1, "x + 2": 3 }
+ * ```
+ */
+export function tryEval(arr: string[]): Record<string, unknown>;
+export function tryEval(
+	obj: Record<string, string> | string[] | string
+): Record<string, unknown> | unknown {
+	const result: Record<string, unknown> = {};
+	const evalFn = DataExtractorApiImpl.lastEvalFn!;
+	if (Array.isArray(obj)) {
+		for (const val of obj) {
+			try {
+				result[val] = evalFn(val);
+			} catch (e) {}
+		}
+	} else {
+		for (const [key, val] of Object.entries(obj)) {
+			try {
+				result[key] = evalFn(val);
+			} catch (e) {}
+		}
+	}
+	return result;
+}