[英]Gulp fontgen fails because “TypeError: Cannot read property 'replace' of undefined”
我從一個gulp-fontgen項目開始,但是用gulp命令運行它時出現錯誤:
TypeError: Cannot read property 'replace' of undefined
我的gulpfile:
var gulp = require('gulp');
var fontgen = require('./node_modules/gulp-fontgen');
gulp.task('fontgen', function() {
return gulp.src("./assets/*.{ttf,otf}")
.pipe(fontgen({
dest: "./dest/"
}));
});
gulp.task('default', ['fontgen']);
我的package.json:
{
"name": "garagord-webfont",
"version": "1.0.0",
"description": "",
"main": "gulpfile.js",
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1"
},
"author": "",
"license": "ISC",
"devDependencies": {
"gulp": "^3.9.1",
"gulp-fontgen": "^0.2.4"
}
}
整個終端輸出:
$ gulp
[11:26:24] Using gulpfile /Volumes/B/Documentos/tipografia-garagord/Gulp/gulpfile.js
[11:26:24] Starting 'fontgen'...
/Volumes/B/Documentos/tipografia-garagord/Gulp/node_modules/fontfacegen/lib/configure.js:19
_.config_file = _.source.replace(_.extension, '') + '.json';
^
TypeError: Cannot read property 'replace' of undefined
at module.exports (/Volumes/B/Documentos/tipografia-garagord/Gulp/node_modules/fontfacegen/lib/configure.js:19:30)
at module.exports (/Volumes/B/Documentos/tipografia-garagord/Gulp/node_modules/fontfacegen/lib/fontfacegen.js:16:18)
at DestroyableTransform._transform (/Volumes/B/Documentos/tipografia-garagord/Gulp/node_modules/gulp-fontgen/lib/gulp-fontgen.js:47:31)
at DestroyableTransform.Transform._read (/Volumes/B/Documentos/tipografia-garagord/Gulp/node_modules/through2/node_modules/readable-stream/lib/_stream_transform.js:159:10)
at DestroyableTransform.Transform._write (/Volumes/B/Documentos/tipografia-garagord/Gulp/node_modules/through2/node_modules/readable-stream/lib/_stream_transform.js:147:83)
at doWrite (/Volumes/B/Documentos/tipografia-garagord/Gulp/node_modules/through2/node_modules/readable-stream/lib/_stream_writable.js:313:64)
at writeOrBuffer (/Volumes/B/Documentos/tipografia-garagord/Gulp/node_modules/through2/node_modules/readable-stream/lib/_stream_writable.js:302:5)
at DestroyableTransform.Writable.write (/Volumes/B/Documentos/tipografia-garagord/Gulp/node_modules/through2/node_modules/readable-stream/lib/_stream_writable.js:241:11)
at write (/Volumes/B/Documentos/tipografia-garagord/Gulp/node_modules/vinyl-fs/node_modules/readable-stream/lib/_stream_readable.js:623:24)
at flow (/Volumes/B/Documentos/tipografia-garagord/Gulp/node_modules/vinyl-fs/node_modules/readable-stream/lib/_stream_readable.js:632:7)
gulp-fontgen
插件嚴重損壞。 只需看一下源代碼即可 :
return _through2.default.obj(function (file, enc, callback) {
// options.source = file.path;
(0, _fontfacegen2.default)(options);
undefined.push(file);
return callback();
});
上面的注釋行是導致您出錯的原因。 source
選項沒有傳遞給fontfacegen
。 即使您取消注釋該行,也會出現undefined.push(file);
在那可能行不通的地方(課程:不要吸毒,不要孩子,要經常寫單元測試)。
我的建議:不要使用gulp-fontgen
。 該插件實際上只是fontfacegen
的薄包裝。 您可以通過直接將fontfacegen
與map-stream
結合使用來輕松替換它:
var gulp = require('gulp');
var fontfacegen = require('fontfacegen');
var map = require('map-stream');
gulp.task('fontgen', function() {
return gulp.src("./assets/*.{ttf,otf}")
.pipe(map(function(file, cb) {
fontfacegen({
source: file.path,
dest: './dest/'
});
cb(null, file);
}));
});
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