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Note skip-ignore for "Skipping node_modules" #1553

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merged 6 commits into from
Jan 21, 2022
Merged

Note skip-ignore for "Skipping node_modules" #1553

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d912791
Note `skip-ignore` for "Skipping `node_modules`"
webstrand Nov 29, 2021
a9c3130
Remove spurious duplication
webstrand Nov 29, 2021
27d8093
update
cspotcode Jan 21, 2022
1d9fb6d
revert changes to readme; readme is built from docs/
cspotcode Jan 21, 2022
0bebd50
more wordsmithing
cspotcode Jan 21, 2022
e3c6c3b
more tweaks
cspotcode Jan 21, 2022
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9 changes: 8 additions & 1 deletion website/docs/how-it-works.md
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Expand Up @@ -16,9 +16,16 @@ Vanilla `node` loads `.js` by reading code from disk and executing it. Our hook

## Skipping `node_modules`

By default, **TypeScript Node** avoids compiling files in `/node_modules/` for three reasons:
By default, ts-node avoids compiling files in `/node_modules/` for three reasons:

1. Modules should always be published in a format node.js can consume
2. Transpiling the entire dependency tree will make your project slower
3. Differing behaviours between TypeScript and node.js (e.g. ES2015 modules) can result in a project that works until you decide to support a feature natively from node.js

If you need to import uncompiled TypeScript in `node_modules`, use [`--skipIgnore`](./options#transpilation) or [`TS_NODE_SKIP_IGNORE`](./options#transpilation) to bypass this restriction.

## Skipping pre-compiled TypeScript

If a compiled JavaScript file with the same name as a TypeScript file already exists, the TypeScript file will be ignored. ts-node will import the pre-compiled JavaScript.

To force ts-node to import the TypeScript source, not the precompiled JavaScript, use [`--preferTsExts`](./options#transpilation).