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fix named-asset-import plugin to work with export-as syntax #5573

Merged
merged 8 commits into from
Nov 20, 2018
Merged

fix named-asset-import plugin to work with export-as syntax #5573

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bd142fd
update named-asset-import babel plugin
NShahri Oct 25, 2018
301fdff
Merge branch 'master' of github.com:facebook/create-react-app into ex…
NShahri Oct 31, 2018
57f37b6
add tests to named-asset-import plugin
NShahri Oct 31, 2018
7a34ba7
add more plugin test
NShahri Nov 1, 2018
684ee21
extract generateNewSource method, renaming variables
NShahri Nov 1, 2018
33eb82d
extract replaceNotVisitedSpecifiers for export and import visitors
NShahri Nov 2, 2018
adcbfbb
remove visited list update from importDeclaration
NShahri Nov 2, 2018
e44167a
renaming methods and removing return directly instead of saving
NShahri Nov 19, 2018
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120 changes: 79 additions & 41 deletions packages/babel-plugin-named-asset-import/index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -5,60 +5,98 @@ const { extname } = require('path');
function namedAssetImportPlugin({ types: t }) {
const visited = new WeakSet();

function generateNewSourcePath(loaderMap, moduleName, sourcePath) {
const ext = extname(sourcePath).substr(1);
const extMap = loaderMap[ext];
return extMap[moduleName]
? extMap[moduleName].replace(/\[path\]/, sourcePath)
: sourcePath;
}

function replaceMatchingSpecifiers(path, loaderMap, callback) {
const sourcePath = path.node.source.value;
const ext = extname(sourcePath).substr(1);

if (visited.has(path.node) || sourcePath.indexOf('!') !== -1) {
return;
}

if (loaderMap[ext]) {
path.replaceWithMultiple(
path.node.specifiers.map(specifier => {
const newSpecifier = callback(specifier, sourcePath);
visited.add(newSpecifier);

return newSpecifier;
})
);
}
}

return {
visitor: {
ImportDeclaration(
ExportNamedDeclaration(
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path,
{
opts: { loaderMap },
}
) {
const sourcePath = path.node.source.value;
const ext = extname(sourcePath).substr(1);

if (visited.has(path.node) || sourcePath.indexOf('!') !== -1) {
if (!path.node.source) {
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return;
}

if (loaderMap[ext]) {
path.replaceWithMultiple(
path.node.specifiers.map(specifier => {
if (t.isImportDefaultSpecifier(specifier)) {
const newDefaultImport = t.importDeclaration(
[
t.importDefaultSpecifier(
t.identifier(specifier.local.name)
),
],
t.stringLiteral(sourcePath)
);

visited.add(newDefaultImport);
return newDefaultImport;
}

const newImport = t.importDeclaration(
[
t.importSpecifier(
t.identifier(specifier.local.name),
t.identifier(specifier.imported.name)
),
],
t.stringLiteral(
loaderMap[ext][specifier.imported.name]
? loaderMap[ext][specifier.imported.name].replace(
/\[path\]/,
sourcePath
)
: sourcePath
)
);
replaceMatchingSpecifiers(path, loaderMap, (specifier, sourcePath) => {
if (t.isExportDefaultSpecifier(specifier)) {
return t.exportDeclaration(
[t.exportDefaultSpecifier(t.identifier(specifier.local.name))],
t.stringLiteral(sourcePath)
);
}

visited.add(newImport);
return newImport;
})
return t.exportNamedDeclaration(
null,
[
t.exportSpecifier(
t.identifier(specifier.local.name),
t.identifier(specifier.exported.name)
),
],
t.stringLiteral(
generateNewSourcePath(loaderMap, specifier.local.name, sourcePath)
)
);
});
},
ImportDeclaration(
path,
{
opts: { loaderMap },
}
) {
replaceMatchingSpecifiers(path, loaderMap, (specifier, sourcePath) => {
if (t.isImportDefaultSpecifier(specifier)) {
return t.importDeclaration(
[t.importDefaultSpecifier(t.identifier(specifier.local.name))],
t.stringLiteral(sourcePath)
);
}

return t.importDeclaration(
[
t.importSpecifier(
t.identifier(specifier.local.name),
t.identifier(specifier.imported.name)
),
],
t.stringLiteral(
generateNewSourcePath(
loaderMap,
specifier.imported.name,
sourcePath
)
)
);
});
},
},
};
Expand Down
48 changes: 48 additions & 0 deletions packages/babel-plugin-named-asset-import/index.test.js
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Original file line number Diff line number Diff line change
Expand Up @@ -46,5 +46,53 @@ pluginTester({
'import { logoUrl } from "logo.svg";\n' +
'import { ReactComponent as Logo } from "@svgr/webpack?-prettier,-svgo!logo.svg";',
},
defaultExport: {
code: 'export default logo;',
output: 'export default logo;',
},
constExport: {
code: 'export const token = "token";',
output: 'export const token = "token";',
},
classExport: {
code: 'export class Logo {}',
output: 'export class Logo {}',
},
namedExport: {
code: 'export { logo } from "logo";',
output: 'export { logo } from "logo";',
},
namedExportRenamed: {
code: 'export { Url as logo } from "logo";',
output: 'export { Url as logo } from "logo";',
},
allExport: {
code: 'export * from "logo";',
output: 'export * from "logo";',
},
svgNamedExport: {
code: 'export { logo } from "logo.svg";',
output: 'export { logo } from "logo.svg";',
},
svgAllExport: {
code: 'export * from "logo.svg";',
output: 'export * from "logo.svg";',
},
svgReactComponentNamedExport: {
code: 'export { ReactComponent as Logo } from "logo.svg";',
output:
'export { ReactComponent as Logo } from "@svgr/webpack?-prettier,-svgo!logo.svg";',
},
svgReactComponentExport: {
code: 'export { ReactComponent } from "logo.svg";',
output:
'export { ReactComponent } from "@svgr/webpack?-prettier,-svgo!logo.svg";',
},
svgMultipleExport: {
code: 'export { logoUrl , ReactComponent as Logo } from "logo.svg";',
output:
'export { logoUrl } from "logo.svg";\n' +
'export { ReactComponent as Logo } from "@svgr/webpack?-prettier,-svgo!logo.svg";',
},
},
});