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Javascript – why is npm liabrary is not a function?

There is a problem with npm library for html minify. I downloaded and declared a library

import htmlmin from 'html-minifier';

but when i try to run a gulp task

export const html = () => {
  return gulp.src("source/*.html")
    .pipe(htmlmin({ collapseWhitespace: true }))
    .pipe(gulp.dest("build"));

}
but a got an error

TypeError: htmlmin is not a function

I am pretty sure there is no syntax error but I dont know what is a problem.

I tried different liabraries and more old node.js but I still got same problem

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2

Answers


  1. Chosen as BEST ANSWER
    0

    it worked after I instaled special library for gulp gulp-htmlmin after a have seen usage for this one

    const gulp = require('gulp');
const htmlmin = require('gulp-htmlmin');

gulp.task('minify', () => {
  return gulp.src('src/*.html')
    .pipe(htmlmin({ collapseWhitespace: true }))
    .pipe(gulp.dest('dist'));
});

  2. 0

    Please take a look at library documentation.

    There is a precise example of how to use the library with gulp:

    const { src, dest, series } = require('gulp');
const htmlMinify = require('html-minifier');

const options = {
  includeAutoGeneratedTags: true,
  removeAttributeQuotes: true,
  removeComments: true,
  removeRedundantAttributes: true,
  removeScriptTypeAttributes: true,
  removeStyleLinkTypeAttributes: true,
  sortClassName: true,
  useShortDoctype: true,
  collapseWhitespace: true
};

function html() {
  return src('app/**/*.html')
    .on('data', function(file) {
      const buferFile = Buffer.from(htmlMinify.minify(file.contents.toString(), options))
      return file.contents = buferFile
    })
    .pipe(dest('build'))
}

exports.html = series(html)
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