Category: JavaScript

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How to run unix commands from nodejs?

Nodejs allows us to execute linux commands from its child process module as shown below. var exec = require(‘child_process’).exec; // any unix based command var cmdToLaunch = “ls -la”; function execCB (error, stdout, stderr)...

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xCode: gulp: command not found

If you’re using gulp or similar build tools to build your project you might run into this issue. /Users/username/Library/Developer/Xcode/DerivedData/project/filename.sh: line 4: gulp: command not found Here, xCode can not find gulp because it uses...

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Stubbing a class without invoking a constructor

You can create Stub instances using sinon.createStubInstance. const sinon = require(‘sinon’); const Foo = require(‘../Foo.js’); const fooStub = sinon.createStubInstance(Foo); fooStub.foo { bar() { returns ‘bar’; } } expect(fooStub.foo.bar()).to.equal(‘bar’);

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How to read a file as a string in nodejs javascript?

Below code reads the file content in asynchronous manner and the content is returned in the string format and buffered format respectively. let fs = require(“fs-extra”); let path = require(“path”); fs.readFile(path.join(__dirname, “filePath”), “utf8”,(data, err)...