1 files changed, 124 insertions, 0 deletions
diff --git a/devtools/client/shared/components/object-inspector/utils/client.js b/devtools/client/shared/components/object-inspector/utils/client.js
new file mode 100644
index 0000000000..eaa42be05a
--- /dev/null
+++ b/devtools/client/shared/components/object-inspector/utils/client.js
@@ -0,0 +1,124 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at <http://mozilla.org/MPL/2.0/>. */
+
+const {
+  getValue,
+  nodeHasFullText,
+} = require("resource://devtools/client/shared/components/object-inspector/utils/node.js");
+
+async function enumIndexedProperties(objectFront, start, end) {
+  try {
+    const iterator = await objectFront.enumProperties({
+      ignoreNonIndexedProperties: true,
+    });
+    const response = await iteratorSlice(iterator, start, end);
+    return response;
+  } catch (e) {
+    console.error("Error in enumIndexedProperties", e);
+    return {};
+  }
+}
+
+async function enumNonIndexedProperties(objectFront, start, end) {
+  try {
+    const iterator = await objectFront.enumProperties({
+      ignoreIndexedProperties: true,
+    });
+    const response = await iteratorSlice(iterator, start, end);
+    return response;
+  } catch (e) {
+    console.error("Error in enumNonIndexedProperties", e);
+    return {};
+  }
+}
+
+async function enumEntries(objectFront, start, end) {
+  try {
+    const iterator = await objectFront.enumEntries();
+    const response = await iteratorSlice(iterator, start, end);
+    return response;
+  } catch (e) {
+    console.error("Error in enumEntries", e);
+    return {};
+  }
+}
+
+async function enumSymbols(objectFront, start, end) {
+  try {
+    const iterator = await objectFront.enumSymbols();
+    const response = await iteratorSlice(iterator, start, end);
+    return response;
+  } catch (e) {
+    console.error("Error in enumSymbols", e);
+    return {};
+  }
+}
+
+async function enumPrivateProperties(objectFront, start, end) {
+  try {
+    const iterator = await objectFront.enumPrivateProperties();
+    const response = await iteratorSlice(iterator, start, end);
+    return response;
+  } catch (e) {
+    console.error("Error in enumPrivateProperties", e);
+    return {};
+  }
+}
+
+async function getPrototype(objectFront) {
+  if (typeof objectFront.getPrototype !== "function") {
+    console.error("objectFront.getPrototype is not a function");
+    return Promise.resolve({});
+  }
+  return objectFront.getPrototype();
+}
+
+async function getFullText(longStringFront, item) {
+  const { initial, fullText, length } = getValue(item);
+  // Return fullText property if it exists so that it can be added to the
+  // loadedProperties map.
+  if (nodeHasFullText(item)) {
+    return { fullText };
+  }
+
+  try {
+    const substring = await longStringFront.substring(initial.length, length);
+    return {
+      fullText: initial + substring,
+    };
+  } catch (e) {
+    console.error("LongStringFront.substring", e);
+    throw e;
+  }
+}
+
+async function getPromiseState(objectFront) {
+  return objectFront.getPromiseState();
+}
+
+async function getProxySlots(objectFront) {
+  return objectFront.getProxySlots();
+}
+
+function iteratorSlice(iterator, start, end) {
+  start = start || 0;
+  const count = end ? end - start + 1 : iterator.count;
+
+  if (count === 0) {
+    return Promise.resolve({});
+  }
+  return iterator.slice(start, count);
+}
+
+module.exports = {
+  enumEntries,
+  enumIndexedProperties,
+  enumNonIndexedProperties,
+  enumPrivateProperties,
+  enumSymbols,
+  getPrototype,
+  getFullText,
+  getPromiseState,
+  getProxySlots,
+};