Sakurai/pdf.js
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Update the gulp minified command to use uglify-es

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By updating to uglify-es, rather than uglify-js, the minifier *itself* now supports ES6 code. This means that it's now possible to minify code built with `PDFJS_NEXT = true` set, i.e. with Babel transpilation disabled, which wasn't the case previously.

Note that uglify-es is based on the API of uglify-js v3, which differs from the one that we previously used.
Of particular importance is the fact that it's no longer possible to provide a path to a file for minification, but one must instead directly provide the source of the file.

For more information, please see https://github.com/mishoo/UglifyJS2/tree/harmony
This commit is contained in:
Jonas Jenwald 2017-08-27 14:18:04 +02:00
parent 7cc7260634
commit 70e80322da
2 changed files with 12 additions and 10 deletions
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20
gulpfile.js
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@ -702,25 +702,27 @@ gulp.task('minified-pre', ['buildnumber', 'locale'], function () {
});
gulp.task('minified-post', ['minified-pre'], function () {
var viewerFiles = [
MINIFIED_DIR + BUILD_DIR + 'pdf.js',
MINIFIED_DIR + '/web/viewer.js'
];
var pdfFile = fs.readFileSync(MINIFIED_DIR + '/build/pdf.js').toString();
var pdfWorkerFile =
fs.readFileSync(MINIFIED_DIR + '/build/pdf.worker.js').toString();
var viewerFiles = {
'pdf.js': pdfFile,
'viewer.js': fs.readFileSync(MINIFIED_DIR + '/web/viewer.js').toString(),
};
console.log();
console.log('### Minifying js files');
var UglifyJS = require('uglify-js');
var UglifyES = require('uglify-es');
// V8 chokes on very long sequences. Works around that.
var optsForHugeFile = { compress: { sequences: false, }, };
fs.writeFileSync(MINIFIED_DIR + '/web/pdf.viewer.js',
UglifyJS.minify(viewerFiles).code);
UglifyES.minify(viewerFiles).code);
fs.writeFileSync(MINIFIED_DIR + '/build/pdf.min.js',
UglifyJS.minify(MINIFIED_DIR + '/build/pdf.js').code);
UglifyES.minify(pdfFile).code);
fs.writeFileSync(MINIFIED_DIR + '/build/pdf.worker.min.js',
UglifyJS.minify(MINIFIED_DIR + '/build/pdf.worker.js',
optsForHugeFile).code);
UglifyES.minify(pdfWorkerFile, optsForHugeFile).code);
console.log();
console.log('### Cleaning js files');

2
package.json
View File

@ -29,7 +29,7 @@
"systemjs-plugin-babel": "0.0.21",
"ttest": "^1.1.0",
"typogr": "^0.6.6",
"uglify-js": "^2.6.1",
"uglify-es": "^3.0.28",
"vinyl-fs": "^2.4.4",
"webpack": "^2.2.1",
"webpack-stream": "^3.2.0",