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javascriptnode.jsminify

html-minifier node.js TypeError: value.replace is not a function

I am trying to minify html file using the node module html-minifier. In order to this I have created this little node.js file which should be able to do this

'use strict'

var fs = require('fs');
var minifier = require('html-minifier').minify;

var htmlFile = fs.readFileSync("users/email/test.html");
var output = minifier(htmlFile, {
    removeAttributeQuotes: true
});

process.stdout.write(output);

but when I run the program I get the following error.

TypeError: value.replace is not a function

Any idea why this is happening. I am using version 4.0.0 of html-minifier

Solution

  • Since you haven't specified a text encoding, readFileSync returned a Buffer, not a string. See the readFileSync documentation.

    If you know the encoding to use, you can specify it as a second argument:

    var htmlFile = fs.readFileSync("users/email/test.html", "utf8");