I would like to preload the firebase auth emulator with my test user accounts whenever it starts up, the same way I do for the Firestore emulator with its import/export options. I tried using auth:import and auth:export while my emulators were running but it connected to our actual dev firebase project, and not the emulators. Is there anyway to run auth:import and auth:export against the auth emulator?
For reference, I am referring to these commands (https://firebase.google.com/docs/cli/auth) and this emulator (https://firebase.google.com/docs/emulator-suite/connect_auth).
The ability to do this has now been added to the firebase tools
The older answers still work and may be useful
https://github.com/firebase/firebase-tools/releases/tag/v9.1.0
Support emulators:export and import for Auth Emulator (#2955).
firebase help auth:import
Usage: firebase auth:import [options] [dataFile]
import users into your Firebase project from a data file(.csv or .json)
Options:
--hash-algo <hashAlgo> specify the hash algorithm used in password for these accounts
--hash-key <hashKey> specify the key used in hash algorithm
--salt-separator <saltSeparator> specify the salt separator which will be appended to salt when verifying password. only used by SCRYPT now.
--rounds <rounds> specify how many rounds for hash calculation.
--mem-cost <memCost> specify the memory cost for firebase scrypt, or cpu/memory cost for standard scrypt
--parallelization <parallelization> specify the parallelization for standard scrypt.
--block-size <blockSize> specify the block size (normally is 8) for standard scrypt.
--dk-len <dkLen> specify derived key length for standard scrypt.
--hash-input-order <hashInputOrder> specify the order of password and salt. Possible values are SALT_FIRST and PASSWORD_FIRST. MD5, SHA1, SHA256, SHA512, HMAC_MD5, HMAC_SHA1, HMAC_SHA256, HMAC_SHA512 support this flag.
-h, --help output usage information