1.2.0 • Published 3 years ago
debugbot v1.2.0
Debug Bot
This is a simple Node.js program which can attach to a running Node.js program and evaluate expressions and give you the value.
Setup Instructions
Install yarn if not installed already.
npm install -g yarn
$ yarn install
$ yarn run build
$ yarn run test
This package uses Yarn 2.
node_modules
folder is no more. It comes with a few extra initial setup steps. VS Code is supported.
- Make sure you select the 'Workspace version' of TypeScript.
- A recommended extension ZipFS could be installed optionally for debugging dependencies.
vscode-chrome-debug-core
is already 'unplug'ged
Usage
- Logic for using Debug Adapter is in Attacher
- InlineExpressionEvaluator is used for the below example. An expression can be evaluated in a line in a file.
- ExpressionEvaluator has a callback which is used when a breakpoint is hit and an expression is evaluated.
- An instance of InlineExpressionEvaluator class can be created.
attach
method is used to attach to a running node.js process. The debugging port has to be passed as a parameter.getValue
method is where a breakpoint is set and the value is fetched and returned. This needs the file path of the program where the breakpoint has to be set, line number, expression(variable name), and optionally column number.disconnect
can be used to disconnect the debugger.
Examples
tests/attacher.test.ts
has the tests which is ran duringnpm run test
tests/ExpressionEvaluator/inlineEvaluatorTest.ts
has a simple program which can be used as an example, shown below.
In a terminal, run :
$ yarn node --inspect=43210 ./dist/tests/sampleProgram.js
Open another terminal, run :
$ yarn node ./dist/tests/ExpressionEvaluator/inlineEvaluatorTest.js
You can see that the value is printed on the console.