Prompt Title: Firestore import

One open source tool that can help you upload Excel data into a Firestore collection is the firestore-import-export tool. This tool allows you to import data into Firestore from a variety of formats, including CSV and JSON.

To use firestore-import-export to upload Excel data into a Firestore collection, you can follow these steps:

1. Convert the Excel data to CSV format. You can do this by opening the Excel file in Microsoft Excel, selecting "Save As", and choosing "CSV (Comma delimited)" as the file format.

2. Install the firestore-import-export tool. You can install it globally using the following command:

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npm install -g firestore-import-export

3. Export the CSV data to a JSON file. You can use a tool like csvtojson to convert the CSV data to a JSON file. Install it using the following command:

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npm install -g csvtojson

And then run the following command to convert the CSV data to JSON:

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csvtojson input.csv > output.json

Replace input.csv with the name of your CSV file, and output.json with the name of the JSON file you want to create.

4. Use firestore-import-export to upload the JSON data to your Firestore collection. You can use the following command:

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firestore-import --accountCredentials path/to/credentials.json --backupFile path/to/output.json --nodePath collectionName --import

Replace path/to/credentials.json with the path to your Firestore service account credentials file, path/to/output.json with the path to the JSON file you created in step 3, and collectionName with the name of the Firestore collection you want to upload the data to.

After running this command, the data from your Excel file should be uploaded to your Firestore collection.