Skip to content

doc: add spec for contains module syntax #52059

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 2 commits into from
Mar 20, 2024
Merged

doc: add spec for contains module syntax #52059

Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
f06e855
doc: add spec for contains module syntax
GeoffreyBooth Mar 12, 2024
931460f
invert
GeoffreyBooth Mar 17, 2024
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
15 changes: 13 additions & 2 deletions doc/api/esm.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -1086,8 +1086,8 @@ _isImports_, _conditions_)
> 10. If _url_ ends in _".js"_, then
> 1. If _packageType_ is not **null**, then
> 1. Return _packageType_.
> 2. If `--experimental-detect-module` is enabled and the source of
> module contains static import or export syntax, then
> 2. If `--experimental-detect-module` is enabled and the result of
> **DETECT\_MODULE\_SYNTAX**(_source_) is true, then
> 1. Return _"module"_.
> 3. Return _"commonjs"_.
> 11. If _url_ does not have any extension, then
Expand Down Expand Up @@ -1124,6 +1124,17 @@ _isImports_, _conditions_)
> 1. Throw an _Invalid Package Configuration_ error.
> 4. Return the parsed JSON source of the file at _pjsonURL_.

**DETECT\_MODULE\_SYNTAX**(_source_)

> 1. Parse _source_ as an ECMAScript module.
> 2. If the parse is successful, then
> 1. If _source_ contains top-level `await`, static `import` or `export`
> statements, or `import.meta`, return **true**.
> 2. If _source_ contains a top-level lexical declaration (`const`, `let`,
> or `class`) of any of the CommonJS wrapper variables (`require`,
> `exports`, `module`, `__filename`, or `__dirname`) then return **true**.
> 3. Else return **false**.

### Customizing ESM specifier resolution algorithm

[Module customization hooks][] provide a mechanism for customizing the ESM
Expand Down