【问题标题】:Why might a parcel command fail when run from an npm shell script, but not when run directly?为什么从 npm shell 脚本运行 parcel 命令会失败,但直接运行时不会?
【发布时间】:2019-06-29 20:40:43
【问题描述】:

我有以下 prod 脚本,我以前在另一个非常相似的项目中使用过:

#!/usr/bin/env sh

GCC=$(npm bin)/google-closure-compiler

preGccBuildSteps () {
  rimraf prod dist && mkdir prod && ln -sfn ../../css prod/css && \
    spago build && spago bundle-module --main Metajelo.UI --to prod/index.prod.js && \
    cp static/index.* prod/
}


preGccBuildSteps || { echo 'preGccBuildSteps failed' ; exit 1; }
"$GCC" --js prod/index.prod.js --js_output_file prod/index.opt.js && \
  echo $(pwd) && \
  parcel build --public-url ./ prod/index.html

echo $(pwd) 是最近添加的,以尝试确认我的神智正常,但不幸的是,当我使用 npm run prod 运行它时,它会打印出预期的目录,并且我收到一个似乎不是很有帮助的错误:

/wd/app
[Error: ENOENT: no such file or directory, scandir 'build'] {
  errno: -2,
  code: 'ENOENT',
  syscall: 'scandir',
  path: 'build'
}
/wd/node_modules/parcel-luxe/lib/parser.js:44
    files.forEach(function (file) {
          ^

TypeError: Cannot read property 'forEach' of undefined
    at /wd/node_modules/parcel-luxe/lib/parser.js:44:11
    at /wd/node_modules/parcel-luxe/lib/reader.js:9:14
    at FSReqCallback.oncomplete (fs.js:136:23)
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! purescript-metajelo-ui@ prod: `../scripts/prod`
npm ERR! Exit status 1
npm ERR! 
npm ERR! Failed at the purescript-metajelo-ui@ prod script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     /home/brandon/.npm/_logs/2019-06-29T20_34_37_583Z-debug.log

注意/wd/apppwd 的预期输出。

好的,很明显问题出在最后一个命令parcel build --public-url ./ prod/index.html

但是当我直接在终端中运行它时,即使在npm run prod 出现错误之后,我实际上还是成功了:

brandon@4747aec8d9e1:/wd/app$ parcel build --public-url ./ prod/index.html
✨  Built in 6.10s.

dist/prod.0a64bfcf.js.map     547.15 KB    107ms
dist/prod.0a64bfcf.js          253.9 KB    5.56s
dist/index.html                 5.01 KB    375ms
dist/prod.74dcbc56.css.map      4.46 KB      5ms
dist/icomoon.0cf994d0.svg       3.53 KB     40ms
dist/icomoon.6cd840b1.eot       1.95 KB     40ms
dist/icomoon.a7482a13.woff      1.86 KB     39ms
dist/prod.74dcbc56.css          1.82 KB    5.50s
dist/icomoon.712d3017.ttf       1.79 KB     39ms

那么为什么从npm run prod 运行时会失败?

【问题讨论】:

  • 如果我将此命令添加为独立脚本:` "parcel": "parcel build --public-url ./prod/index.html",, and do npm run parcel, it fails with the same error message. Only thing I can think is that npm ` 以某种方式扰乱了环境。

标签: npm parceljs


【解决方案1】:

不是一个非常令人满意的答案,但是,我现在意识到我不小心在容器外运行了 npm install。尽管如此,node_modules 还是安装在同一个地方,但显然这在其他方面有所不同。在容器内rm -fr node_modules && npm install 之后,一切都恢复正常了。

【讨论】:

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