Node error saving chart as PDF: Cannot find module 'infer-owner'

[pankajb64]

I see there are previous issues logged as #13 and #115 , but my error seems different so i'm creating a separate issue.

I installed altair saver using conda install -c conda-forge altair_saver. Now, when trying to save a chart as PDF, I get this error, which seems from nodejs.

internal/modules/cjs/loader.js:670
    throw err;
    ^

Error: Cannot find module 'infer-owner'
    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:668:15)
    at Function.Module._load (internal/modules/cjs/loader.js:591:27)
    at Module.require (internal/modules/cjs/loader.js:723:19)
    at require (internal/modules/cjs/helpers.js:14:16)
    at Object.<anonymous> (/Users/ciboguest/misc/ljmu/ljmu_paper_env/lib/node_modules/npm/node_modules/gentle-fs/lib/mkdir.js:4:20)
    at Module._compile (internal/modules/cjs/loader.js:816:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:827:10)
    at Module.load (internal/modules/cjs/loader.js:685:32)
    at Function.Module._load (internal/modules/cjs/loader.js:620:12)
    at Module.require (internal/modules/cjs/loader.js:723:19)

this same error happens if I try to install the package infer-owner using npm install infer-owner, or if I try npm install -g infer-owner

the python error is similar to #115 ,

CalledProcessError                        Traceback (most recent call last)
Input In [16], in <cell line: 1>()
----> 1 altair_saver.save(chart_5nn_cc, 'fig.pdf')

File ~/misc/ljmu/ljmu_paper_env/lib/python3.9/site-packages/altair_saver/_core.py:169, in save(chart, fp, fmt, mode, embed_options, method, suppress_data_warning, **kwargs)
    166 if embed_options is None:
    167     embed_options = alt.renderers.options.get("embed_options", None)
--> 169 Saver = _select_saver(method, mode=mode, fmt=fmt, fp=fp)
    170 saver = Saver(spec, mode=mode, embed_options=embed_options, **kwargs)
    172 return saver.save(fp=fp, fmt=fmt)

File ~/misc/ljmu/ljmu_paper_env/lib/python3.9/site-packages/altair_saver/_core.py:67, in _select_saver(method, mode, fmt, fp)
     65     fmt = extract_format(fp)
     66 for s in _SAVER_METHODS.values():
---> 67     if s.enabled() and fmt in s.valid_formats[mode]:
     68         return s
     69 raise ValueError(f"No enabled saver found that supports format={fmt!r}")

File ~/misc/ljmu/ljmu_paper_env/lib/python3.9/site-packages/altair_saver/savers/_node.py:103, in NodeSaver.enabled(cls)
    100 @classmethod
    101 def enabled(cls) -> bool:
    102     try:
--> 103         return bool(exec_path("vl2vg") and exec_path("vg2png"))
    104     except ExecutableNotFound:
    105         return False

File ~/misc/ljmu/ljmu_paper_env/lib/python3.9/site-packages/altair_saver/savers/_node.py:29, in exec_path(name)
     27 @functools.lru_cache(16)
     28 def exec_path(name: str) -> str:
---> 29     for path in [None, npm_bin(global_=True), npm_bin(global_=False)]:
     30         exc = shutil.which(name, path=path)
     31         if exc:

File ~/misc/ljmu/ljmu_paper_env/lib/python3.9/site-packages/altair_saver/savers/_node.py:24, in npm_bin(global_)
     22 if global_:
     23     cmd.append("--global")
---> 24 return check_output_with_stderr(cmd).decode().strip()

File ~/misc/ljmu/ljmu_paper_env/lib/python3.9/site-packages/altair_saver/_utils.py:198, in check_output_with_stderr(cmd, shell, input, stderr_filter)
    176 """Run a command in a subprocess, printing stderr to sys.stderr.
    177 
    178 This function exists because normally, stderr from subprocess in the notebook
   (...)
    195 subprocess.CalledProcessError : if the called process returns a non-zero exit code.
    196 """
    197 try:
--> 198     ps = subprocess.run(
    199         cmd,
    200         shell=shell,
    201         input=input,
    202         check=True,
    203         stdout=subprocess.PIPE,
    204         stderr=subprocess.PIPE,
    205     )
    206 except subprocess.CalledProcessError as err:
    207     stderr = err.stderr

File ~/misc/ljmu/ljmu_paper_env/lib/python3.9/subprocess.py:528, in run(input, capture_output, timeout, check, *popenargs, **kwargs)
    526     retcode = process.poll()
    527     if check and retcode:
--> 528         raise CalledProcessError(retcode, process.args,
    529                                  output=stdout, stderr=stderr)
    530 return CompletedProcess(process.args, retcode, stdout, stderr)

CalledProcessError: Command '['/Users/ciboguest/misc/ljmu/ljmu_paper_env/bin/npm', 'bin', '--global']' returned non-zero exit status 1.

Any help would be appreciated.

[pankajb64]

confirming that this issue is the same as #113, and this hotfix works.