Update major JavaScript dependencies - #188
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Babel 7 to 8, @types/node 24 to 26, cpy-cli 6 to 7, and oxfmt 0.63 to 0.66. Verified locally against generated projects: the Jupyter extension builds and its jest suite passes on Babel 8 with cpy-cli 7, svelte-check and tsc report no errors under @types/node 26, and oxfmt 0.66 needs no reformatting. TypeScript stays at 5 in the JavaScript templates, and the exact pin on @testing-library/react stays, since 16.3.3 was deliberately pinned back. Signed-off-by: Tim Paine <3105306+timkpaine@users.noreply.github.com>
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The cross-major upgrades held back from #187, each verified against a generated
project before pushing.
oxfmt^0.63.0^0.66.0@types/node^24.0.0^26.4.0@babel/cli^7.28.6^8.0.4@babel/core^7.29.0^8.0.1@babel/preset-env^7.29.3^8.0.2cpy-cli^6.0.0^7.0.0Checked locally on generated projects rather than assumed:
cpy-cli7 copies thenbextension asset, and both jest suites pass.
svelte-checkreports 0 errors over 343 files andtsc --noEmitis cleanunder
@types/node26.oxfmt0.66 accepts every file unchanged, so no source reformatting isneeded.
Two versions are deliberately left alone:
typescriptstays at^5.9.3in the JavaScript templates.svelte2tsx,svelte-check, andtsceach reject TypeScript 7 for separate reasons.@testing-library/reactstays exact-pinned at16.3.2. It was pinned backfrom
^16.3.3deliberately in 01624df.Stacked on the same files as #187, though on different lines, so the two should
merge in either order.