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Support use of em-forge wasm files in standalone JupyterLite deployment #31

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merged 1 commit into from
Oct 29, 2024
Merged

Support use of em-forge wasm files in standalone JupyterLite deployment #31

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1 change: 1 addition & 0 deletions .gitignore
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Original file line number Diff line number Diff line change
Expand Up @@ -128,3 +128,4 @@ dmypy.json
_output/
cockle_wasm_env/
cockle-config.json
.cockle_temp/
12 changes: 10 additions & 2 deletions jupyterlite_terminal/add_on.py
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Expand Up @@ -20,14 +20,22 @@ def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)

def post_build(self, manager):
cockleTool = Path("node_modules") / "@jupyterlite" / "cockle" / "lib" / "tools" / "prepare_wasm.js"
cockleTool = Path("node_modules", "@jupyterlite", "cockle", "lib", "tools", "prepare_wasm.js")
if not cockleTool.is_file():
cockleTool = ".cockle_temp" / cockleTool
cmd = ["npm", "install", "--no-save", "--prefix", cockleTool.parts[0], "@jupyterlite/cockle"]
print("TerminalAddon:", " ".join(cmd))
subprocess.run(cmd, check=True)

assetDir = Path(self.manager.output_dir) / "extensions" / "@jupyterlite" / "terminal" / "static" / "wasm"

# Although cockle's prepare_wasm is perfectly capable of copying the wasm and associated
# files to the asset directory, here we just get the list of required files and let the
# add-on do the copying for consistency with other extensions.
tempFilename = 'cockle-files.txt'
subprocess.run(["node", str(cockleTool), "--list", tempFilename], check=True)
cmd = ["node", str(cockleTool), "--list", tempFilename]
print("TerminalAddon:", " ".join(cmd))
subprocess.run(cmd, check=True)

with open(tempFilename, 'r') as f:
for source in f:
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