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Duplicate identifier errors when compiling a project which links a module #474

SamVerschueren opened this issue Jan 30, 2018 · 3 comments


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@SamVerschueren SamVerschueren commented Jan 30, 2018

Describe your environment

  • Operating System version: macOS Sierra
  • Firebase SDK version: 4.9.0
  • Firebase Product: auth, database

Describe the problem

We are using a monorepo and have a module (A) which depends on another module (B). Both of firebase listed as dependency. Compiling module B is not a problem. Compiling module A however is. These errors are showing up:

screen shot 2018-01-28 at 19 19 31

I tweeted about this, and @DanielRosenwasser replied that it should be fixed in here.

I was able to solve it with paths mappings in tsconfig.json, but would be nice if it just worked without.

Steps to reproduce:

  1. Create 2 modules which both have firebase as dependency
  2. Link one module to the other yarn add link:../module-b
  3. Compile

(Better to look at the reproduction repository)

Relevant Code:

Here's the repository I created to reproduce the problem.

// @jshcrowthe

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@google-oss-bot google-oss-bot commented Jan 30, 2018

Hmmm this issue does not seem to follow the issue template. Make sure you provide all the required information.


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@PascalPrecht PascalPrecht commented Mar 28, 2018

I can confirm this issue. This a problem that exists with firebase version 4.9.0+.


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@PascalPrecht PascalPrecht commented Apr 3, 2018



@firebase firebase locked and limited conversation to collaborators Oct 23, 2019
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4 participants