Struct ImportAttributes 

pub struct ImportAttributes {
    pub ignore: bool,
    pub optional: bool,
    pub export_names: Option<SmallVec<[RcStr; 1]>>,
    pub chunking_type: Option<SpecifiedChunkingType>,
}

Represents a collection of webpack-style “magic comments” that override import behaviors.

Fields

ignore: bool

Should we ignore this import expression when bundling? If so, the import expression will be left as-is in Turbopack’s output.

This is set by using either a webpackIgnore or turbopackIgnore comment.

Example:

const a = import(/* webpackIgnore: true */ "a");
const b = import(/* turbopackIgnore: true */ "b");

optional: bool

Should resolution errors be suppressed? If so, resolution errors will be completely ignored (no error or warning emitted at build time).

This is set by using a turbopackOptional comment.

Example:

const a = import(/* turbopackOptional: true */ "a");

export_names: Option<SmallVec<[RcStr; 1]>>

Which exports are used from a dynamic import. When set, enables tree-shaking for the dynamically imported module by only including the specified exports.

This is set by using either a webpackExports or turbopackExports comment. None means no directive was found (all exports assumed used). Some([]) means empty list (only side effects). Some([name, ...]) means specific named exports are used.

Example:

const { a } = await import(/* webpackExports: ["a"] */ "module");
const { b } = await import(/* turbopackExports: "b" */ "module");

chunking_type: Option<SpecifiedChunkingType>

Whether to use a specific chunking type for this import. This is set by using a or turbopackChunkingType comment.

Example:

const a = require(/* turbopackChunkingType: parallel */ "a");

Implementations

impl ImportAttributes

pub const fn empty() -> Self

pub fn empty_ref() -> &'static Self

Trait Implementations

impl Debug for ImportAttributes

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for &ImportAttributes

fn default() -> Self

Returns the “default value” for a type.

impl Default for ImportAttributes

fn default() -> Self

Returns the “default value” for a type.