node-env-file

NODE-ENV-FILE

Parse and load environment files (containing ENV variable exports) into Node.js environment, i.e. process.env.

Example

.env

  # some env variables

  FOO=foo1
  BAR=bar1
  BAZ=1
  QUX=

.env2

  # some env variables using exports syntax

  exports FOO=foo2
  exports BAR=bar2
  exports BAZ=2
  exports QUX=

index.js

  var assert = require('assert');
  var env = require('node-env-file');

  process.env.FOO = "defaultfoo";

  // Load any undefined ENV variables form a specified file.
  env(__dirname + '/.env');
  assert.equal(process.env.FOO, "defaultfoo");
  assert.equal(process.env.BAR, "bar1");
  assert.equal(process.env.BAZ, "1");
  assert.equal(process.env.QUX, "");

  // Load another ENV file - and overwrite any defined ENV variables.
  env(__dirname + '/.env2', {overwrite: true});
  assert.equal(process.env.FOO, "foo2");
  assert.equal(process.env.BAR, "bar2");
  assert.equal(process.env.BAZ, "2");
  assert.equal(process.env.QUX, "");

API

• (filepath)

  env('./path/to/.env');
  

• (filepath, options)

  env('./path/to/.env', {verbose: true, overwrite: true});
  

Installation

  $ npm install node-env-file

Test

Local tests:

  $ make test

Examples

Local examples:

  $ make example

Related Libraries

• node-env-flag

Notes

Bash based approach:

Makefile

  define LOAD_ENV
    ENV_FILE=$${2:-'.env'}
    echo "LOAD: $$ENV_FILE"

    if [ -f $$ENV_FILE ]; then
      while read line || [ -n "$$line" ]; do
        if [[ "$$line" == *=* ]] && [[ "$$line" != #* ]]; then
          # TODO: handle exports case
          echo "  export $$line"
          eval "export $$line"
        fi
      done < "$$ENV_FILE"
    fi
  endef
  export LOAD_ENV

  env:
    eval "$$LOAD_ENV"

  ...

License

Released under the MIT license.

Copyright (c) Jonas Grimfelt