CODEWITHSUNDEEP
deno
Parth Kharecha
Parth Kharecha

Reputation: 6503

How to solve Deno error: Uncaught PermissionDenied

when run an application using deno run app.ts command and its give an error: Uncaught PermissionDenied

error: Uncaught PermissionDenied: access to environment variables, run again with the --allow-env flag
    at unwrapResponse ($deno$/ops/dispatch_json.ts:43:11)
    at Object.sendSync ($deno$/ops/dispatch_json.ts:72:10)
    at Object.toObject ($deno$/ops/os.ts:33:12)
    at file:///opt//deno/app.ts:5:22

Upvotes: 3

Views: 2341

Answers (2)

Parth Kharecha
Parth Kharecha

Reputation: 6503

This type of issue we need to set a flag when run application

diffrent kind of permmistions 

--allow-env                    
    Allow environment access

--allow-hrtime                 
    Allow high resolution time measurement

--allow-net=<allow-net>        
    Allow network access

--allow-plugin                 
    Allow loading plugins

--allow-read=<allow-read>      
    Allow file system read access

--allow-run                    
    Allow running subprocesses

--allow-write=<allow-write>    
    Allow file system write access
    deno run -allow-all app.ts

Example

  //Give an environment permission
  deno run --allow-env app.ts

  //Give an all permission 
  deno run -allow-all app.ts 
  OR
  deno run -A app.ts

Ref link: https://stackoverflow.com/a/61878925/9077019

Upvotes: 5

ROOT
ROOT

Reputation: 11622

In your console log, the error caused by trying to access environment variables, in Deno you have to provide/grant the permission flags to be able to access the environment variables:

If you are reading envirnoment variables directly from the terminal:

> TEST=123 deno --allow-env app.ts

If you are reading envirnoment variables from .env file:

> TEST=123 deno --allow-env --allow-read app.ts

NOTE: always priorities least privilege principle and don't grant all permissions arbitrary to the app.

Upvotes: 1

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