Make UserDataReader tree-shakeable

[schmidt-sebastian]

The idea is to not make setDoc() pull in the update-related code and vice versa.

Diff without whitespace: #3333

[google-oss-bot]

Binary Size Report

Affected SDKs

• @firebase/firestore

  Type	Base (c7aa053)	Head (c1e1c33)	Diff
  browser	247 kB	247 kB	-56 B (-0.0%)
  esm2017	193 kB	193 kB	+32 B (+0.0%)
  main	494 kB	494 kB	-4 B (-0.0%)
  module	244 kB	244 kB	-56 B (-0.0%)
  react-native	194 kB	194 kB	+32 B (+0.0%)

• @firebase/firestore/exp

  Type	Base (c7aa053)	Head (c1e1c33)	Diff
  main	398 kB	398 kB	+139 B (+0.0%)

• @firebase/firestore/lite

  Type	Base (c7aa053)	Head (c1e1c33)	Diff
  main	124 kB	124 kB	+136 B (+0.1%)

• @firebase/firestore/memory

  Type	Base (c7aa053)	Head (c1e1c33)	Diff
  browser	184 kB	184 kB	-56 B (-0.0%)
  esm2017	145 kB	145 kB	+32 B (+0.0%)
  main	363 kB	363 kB	-4 B (-0.0%)
  module	183 kB	182 kB	-56 B (-0.0%)
  react-native	145 kB	145 kB	+32 B (+0.0%)

• firebase

  Type	Base (c7aa053)	Head (c1e1c33)	Diff
  firebase-firestore.js	285 kB	285 kB	-59 B (-0.0%)
  firebase-firestore.memory.js	224 kB	224 kB	-59 B (-0.0%)
  firebase.js	818 kB	818 kB	-59 B (-0.0%)

Test Logs

• Base (c7aa053d): https://github.com/firebase/firebase-js-sdk/actions/runs/159866848
• Head (c1e1c334): https://github.com/firebase/firebase-js-sdk/actions/runs/159888702

[rafikhan]

LGTM

[changeset-bot]

🦋 Changeset is good to go

Latest commit: d0cb52b

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