Cannot find name 'Buffer' error after installing Tesseract.js in Angular

Question

I need Tesseract in my project so first I used yarn add tesseract.js after that I used yarn add --dev @types/tesseract.js. When I try to use ng serve I get the following error:

ERROR in node_modules/tesseract.js/src/index.d.ts:98:60 - error TS2591: Cannot find name 'Buffer'. Do you need to install type definitions for node? Try `npm i @types/node` and then add `node` to the types field in your tsconfig.

98     | CanvasRenderingContext2D | File | Blob | ImageData | Buffer;

Anyone knows how to fix this? Thanks in advance

facing the same issue. Any solution that worked?

Harish
– Harish

2020-06-21 22:38:17 +00:00
Commented Jun 21, 2020 at 22:38 — Harish
– Harish, Commented Jun 21, 2020 at 22:38

Harish · Accepted Answer · 2020-06-21 22:44:59Z

9

I was able to resolve this issue by adding types: ["node"] to the compilerOptions in tsconfig.app.json file.

{
  ...
  "compilerOptions": {
    ...
    "types": ["node"] // <-- This should do the charm.
  },
  ...
}

answered Jun 21, 2020 at 22:44

Harish

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Comments

Host_Ghost · Accepted Answer · 2020-04-09 17:11:05Z

0

I was having the same problem with my tesseract application and I tried this and it worked.

Source: cannot find name 'require' in angular 7(typescript 3.1.3)

answered Apr 9, 2020 at 17:11

Host_Ghost

1

1 Comment

stwissel Over a year ago

Hi Host_Ghost, thank you for spending the time to answer a question here. In SO, it is usual to provide (at least in summary) the actual solution and then add the source link. Makes your insight findable by the SO search

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