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Add additional support for loose mode in helper-module-transforms (#6742)

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This commit is contained in:
Brian Ng
2017-11-05 19:54:14 -06:00
committed by Henry Zhu
parent e8a33165ff
commit d81cca3b5f
268 changed files with 2401 additions and 28 deletions
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67
packages/babel-helper-module-transforms/src/index.js
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@@ -61,7 +61,7 @@ export function rewriteModuleStatementsAndPrepareHeader(
}
// Create all of the statically known named exports.
headers.push(...buildExportInitializationStatements(path, meta));
headers.push(...buildExportInitializationStatements(path, meta, loose));
return { meta, headers };
}
@@ -111,6 +111,7 @@ export function wrapInterop(
export function buildNamespaceInitStatements(
metadata: ModuleMetadata,
sourceMetadata: SourceModuleMetadata,
loose: boolean = false,
) {
const statements = [];
@@ -136,7 +137,11 @@ export function buildNamespaceInitStatements(
);
}
if (sourceMetadata.reexportAll) {
const statement = buildNamespaceReexport(metadata, sourceMetadata.name);
const statement = buildNamespaceReexport(
metadata,
sourceMetadata.name,
loose,
);
statement.loc = sourceMetadata.reexportAll.loc;
// Iterate props creating getter for each prop.
@@ -166,26 +171,35 @@ function buildESModuleHeader(
/**
* Create a re-export initialization loop for a specific imported namespace.
*/
function buildNamespaceReexport(metadata, namespace) {
return template.statement`
Object.keys(NAMESPACE).forEach(function(key) {
if (key === "default" || key === "__esModule") return;
VERIFY_NAME_LIST;
function buildNamespaceReexport(metadata, namespace, loose) {
return (loose
? template.statement`
Object.keys(NAMESPACE).forEach(function(key) {
if (key === "default" || key === "__esModule") return;
VERIFY_NAME_LIST;
Object.defineProperty(EXPORTS, key, {
enumerable: true,
get: function() {
return NAMESPACE[key];
},
});
});
`({
EXPORTS[key] = NAMESPACE[key];
});
`
: template.statement`
Object.keys(NAMESPACE).forEach(function(key) {
if (key === "default" || key === "__esModule") return;
VERIFY_NAME_LIST;
Object.defineProperty(EXPORTS, key, {
enumerable: true,
get: function() {
return NAMESPACE[key];
},
});
});
`)({
NAMESPACE: namespace,
EXPORTS: metadata.exportName,
VERIFY_NAME_LIST: metadata.exportNameListName
? template`
if (Object.prototype.hasOwnProperty.call(EXPORTS_LIST, key)) return;
`({ EXPORTS_LIST: metadata.exportNameListName })
if (Object.prototype.hasOwnProperty.call(EXPORTS_LIST, key)) return;
`({ EXPORTS_LIST: metadata.exportNameListName })
: null,
});
}
@@ -239,6 +253,7 @@ function buildExportNameListDeclaration(
function buildExportInitializationStatements(
programPath: NodePath,
metadata: ModuleMetadata,
loose: boolean = false,
) {
const initStatements = [];
@@ -257,14 +272,16 @@ function buildExportInitializationStatements(
for (const data of metadata.source.values()) {
for (const [exportName, importName] of data.reexports) {
initStatements.push(
template`
Object.defineProperty(EXPORTS, "EXPORT_NAME", {
enumerable: true,
get: function() {
return NAMESPACE.IMPORT_NAME;
},
});
`({
(loose
? template.statement`EXPORTS.EXPORT_NAME = NAMESPACE.IMPORT_NAME;`
: template`
Object.defineProperty(EXPORTS, "EXPORT_NAME", {
enumerable: true,
get: function() {
return NAMESPACE.IMPORT_NAME;
},
});
`)({
EXPORTS: metadata.exportName,
EXPORT_NAME: exportName,
NAMESPACE: data.name,