feat: add getValueFromTextNode util function to smithy-client

Author: trivikr

packages/smithy-client/src/get-value-from-text-node.spec.ts

@@ -0,0 +1,56 @@
+import { getValueFromTextNode } from "./get-value-from-text-node";
+
+describe("getValueFromTextNode", () => {
+  const valueInsideTextNode = "valueInsideTextNode";
+
+  it("doesn't modify object if #text is absent", () => {
+    const input = {
+      key: "value",
+      keyObj: {
+        keyInsideObj: "valueInsideObj"
+      }
+    };
+    const output = getValueFromTextNode(input);
+    expect(output).toBe(input);
+  });
+
+  it("populates key with value in #text at first level", () => {
+    const input = {
+      key: "value",
+      keyWithoutTextNode: {
+        key: "value"
+      },
+      keyWithTextNode: {
+        "#text": valueInsideTextNode
+      }
+    };
+    const output = getValueFromTextNode(input);
+    expect(output.key).toBe(input.key);
+    expect(output.keyWithoutTextNode).toBe(input.keyWithoutTextNode);
+    expect(output.keyWithTextNode).toBe(valueInsideTextNode);
+  });
+
+  it("populates key with value in #text at second level", () => {
+    const input = {
+      key: "value",
+      keyWithoutTextNodeAtAnyLevel: {
+        keyObj: {
+          key: "value"
+        }
+      },
+      keyWithTextNodeAtLevel2: {
+        keyWithTextNode: {
+          "#text": valueInsideTextNode
+        }
+      }
+    };
+    const output = getValueFromTextNode(input);
+    expect(output.key).toBe(input.key);
+    expect(output.keyWithoutTextNodeAtAnyLevel).toBe(
+      input.keyWithoutTextNodeAtAnyLevel
+    );
+    expect(output.keyWithTextNodeAtLevel2.keyWithTextNode).toBe(
+      valueInsideTextNode
+    );
+  });
+});

packages/smithy-client/src/get-value-from-text-node.ts

@@ -0,0 +1,15 @@
+/**
+ * Recursively parses object and populates value is node from
+ * "#text" key if it's available
+ */
+export const getValueFromTextNode = (obj: any) => {
+  const textNodeName = "#text";
+  for (const key in obj) {
+    if (obj.hasOwnProperty(key) && obj[key][textNodeName] !== undefined) {
+      obj[key] = obj[key][textNodeName];
+    } else if (typeof obj[key] === "object" && obj[key] !== null) {
+      obj[key] = getValueFromTextNode(obj[key]);
+    }
+  }
+  return obj;
+};

packages/smithy-client/src/index.ts

@@ -4,6 +4,7 @@ export * from "./document-type";
 export * from "./exception";
 export * from "./extended-encode-uri-component";
 export * from "./get-array-if-single-item";
+export * from "./get-value-from-text-node";
 export * from "./isa";
 export * from "./lazy-json";
 export * from "./date-utils";