How to import a Javascript file that is ESM from a CommonJS module? Gulp. Error: [ERR_REQUIRE_ESM]

Question

我的项目完全写成 CommonJS 模块，我不打算更改它。问题是 在使用 gulp.

时我必须使用 ESM 的库

出现这种情况的文件：

const { dest, src } = require('gulp')
const imagemin = require('gulp-imagemin') // This is a ESM. Compiler gives error [ERR_REQUIRE_ESM]


const images = () => {
    // We have specific configs for jpeg and png files to try
    // to really pull down asset sizes
    return src('./src/images/**/*')
        .pipe(
            imagemin(
                [
                    imagemin.mozjpeg({ quality: 60, progressive: true }),
                    imagemin.optipng({ optimizationLevel: 5, interlaced: null })
                ],
                {
                    silent: true
                }
            )
        )
        .pipe(dest('./dist/images'))
}

module.exports = images

这是节点给出的错误

Error [ERR_REQUIRE_ESM]: require() of ES Module C:\Users\Lucas\Documents\repos\nexus-materiales\node_modules\gulp-imagemin\index.js from C:\Users\Lucas\Documents\repos\nexus-materiales\gulp-tasks\images.js not supported.
Instead change the require of index.js in C:\Users\Lucas\Documents\repos\nexus-materiales\gulp-tasks\images.js to a dynamic import() which is available in all CommonJS modules.
    at Object.<anonymous> (C:\Users\Lucas\Documents\repos\nexus-materiales\gulp-tasks\images.js:2:18)
    at Object.<anonymous> (C:\Users\Lucas\Documents\repos\nexus-materiales\gulpfile.js:4:16)
    at async Promise.all (index 0) {
  code: 'ERR_REQUIRE_ESM'
}

那么，如果它是 ESM，我如何使用 commonJS 包含这个文件？这可能吗？

Answer 1

要从 CommonJS 代码导入 ES 模块，请使用 dynamic import。

ES 模块导入是异步的：在创建 gulp 流之前，您必须确保 gulp-imagemin 导入已完成。这可以通过 gulp.series.

来实现

const { dest, series, src } = require('gulp');
let imagemin;

const images = series(
    async () => {
        imagemin = await import('gulp-imagemin');
    },
    () => src('./src/images/**/*')
        .pipe(
            imagemin.default(
                [
                    imagemin.mozjpeg({ quality: 60, progressive: true }),
                    imagemin.optipng({ optimizationLevel: 5, interlaced: null })
                ],
                {
                    silent: true
                }
            )
        )
        .pipe(dest('./dist/images'))
);

请注意，我使用 imagemin.default 访问 gulp-imagemin 的默认导出，因为它是动态导入的。

How to import a Javascript file that is ESM from a CommonJS module? Gulp. Error: [ERR_REQUIRE_ESM]

How to import a Javascript file that is ESM from a CommonJS module? Gulp. Error: [ERR_REQUIRE_ESM]

javascript

node.js

gulp