Developer shares SharePoint list data import script using REST API

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A developer published a JavaScript utility on DEV Community designed to import data into SharePoint lists via the SharePoint REST API. The script allows users to load a JSON export file through a browser file picker and programmatically recreate list items in a target SharePoint site. It includes configurable options such as skipping existing items or clearing lists before import, and handles user resolution through SharePoint's ensureUser endpoint. The tool also manages pagination, request digests, and eventual consistency delays that can occur after list provisioning. The code appears intended as a developer utility for migrating or restoring SharePoint list data between environments.

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