651 lines
16 KiB
JavaScript
651 lines
16 KiB
JavaScript
/*
|
|
MIT License http://www.opensource.org/licenses/mit-license.php
|
|
Author Tobias Koppers @sokra
|
|
*/
|
|
"use strict";
|
|
|
|
const DependencyReference = require("./DependencyReference");
|
|
const HarmonyImportDependency = require("./HarmonyImportDependency");
|
|
const Template = require("../Template");
|
|
const HarmonyLinkingError = require("../HarmonyLinkingError");
|
|
|
|
/** @typedef {import("../Module")} Module */
|
|
|
|
/** @typedef {"missing"|"unused"|"empty-star"|"reexport-non-harmony-default"|"reexport-named-default"|"reexport-namespace-object"|"reexport-non-harmony-default-strict"|"reexport-fake-namespace-object"|"rexport-non-harmony-undefined"|"safe-reexport"|"checked-reexport"|"dynamic-reexport"} ExportModeType */
|
|
|
|
/** @type {Map<string, string>} */
|
|
const EMPTY_MAP = new Map();
|
|
|
|
class ExportMode {
|
|
/**
|
|
* @param {ExportModeType} type type of the mode
|
|
*/
|
|
constructor(type) {
|
|
/** @type {ExportModeType} */
|
|
this.type = type;
|
|
/** @type {string|null} */
|
|
this.name = null;
|
|
/** @type {Map<string, string>} */
|
|
this.map = EMPTY_MAP;
|
|
/** @type {Module|null} */
|
|
this.module = null;
|
|
/** @type {string|null} */
|
|
this.userRequest = null;
|
|
}
|
|
}
|
|
|
|
const EMPTY_STAR_MODE = new ExportMode("empty-star");
|
|
|
|
class HarmonyExportImportedSpecifierDependency extends HarmonyImportDependency {
|
|
constructor(
|
|
request,
|
|
originModule,
|
|
sourceOrder,
|
|
parserScope,
|
|
id,
|
|
name,
|
|
activeExports,
|
|
otherStarExports,
|
|
strictExportPresence
|
|
) {
|
|
super(request, originModule, sourceOrder, parserScope);
|
|
this.id = id;
|
|
this.redirectedId = undefined;
|
|
this.name = name;
|
|
this.activeExports = activeExports;
|
|
this.otherStarExports = otherStarExports;
|
|
this.strictExportPresence = strictExportPresence;
|
|
}
|
|
|
|
get type() {
|
|
return "harmony export imported specifier";
|
|
}
|
|
|
|
get _id() {
|
|
return this.redirectedId || this.id;
|
|
}
|
|
|
|
getMode(ignoreUnused) {
|
|
const name = this.name;
|
|
const id = this._id;
|
|
const used = this.originModule.isUsed(name);
|
|
const importedModule = this._module;
|
|
|
|
if (!importedModule) {
|
|
const mode = new ExportMode("missing");
|
|
mode.userRequest = this.userRequest;
|
|
return mode;
|
|
}
|
|
|
|
if (
|
|
!ignoreUnused &&
|
|
(name ? !used : this.originModule.usedExports === false)
|
|
) {
|
|
const mode = new ExportMode("unused");
|
|
mode.name = name || "*";
|
|
return mode;
|
|
}
|
|
|
|
const strictHarmonyModule = this.originModule.buildMeta.strictHarmonyModule;
|
|
if (name && id === "default" && importedModule.buildMeta) {
|
|
if (!importedModule.buildMeta.exportsType) {
|
|
const mode = new ExportMode(
|
|
strictHarmonyModule
|
|
? "reexport-non-harmony-default-strict"
|
|
: "reexport-non-harmony-default"
|
|
);
|
|
mode.name = name;
|
|
mode.module = importedModule;
|
|
return mode;
|
|
} else if (importedModule.buildMeta.exportsType === "named") {
|
|
const mode = new ExportMode("reexport-named-default");
|
|
mode.name = name;
|
|
mode.module = importedModule;
|
|
return mode;
|
|
}
|
|
}
|
|
|
|
const isNotAHarmonyModule =
|
|
importedModule.buildMeta && !importedModule.buildMeta.exportsType;
|
|
if (name) {
|
|
let mode;
|
|
if (id) {
|
|
// export { name as name }
|
|
if (isNotAHarmonyModule && strictHarmonyModule) {
|
|
mode = new ExportMode("rexport-non-harmony-undefined");
|
|
mode.name = name;
|
|
} else {
|
|
mode = new ExportMode("safe-reexport");
|
|
mode.map = new Map([[name, id]]);
|
|
}
|
|
} else {
|
|
// export { * as name }
|
|
if (isNotAHarmonyModule && strictHarmonyModule) {
|
|
mode = new ExportMode("reexport-fake-namespace-object");
|
|
mode.name = name;
|
|
} else {
|
|
mode = new ExportMode("reexport-namespace-object");
|
|
mode.name = name;
|
|
}
|
|
}
|
|
mode.module = importedModule;
|
|
return mode;
|
|
}
|
|
|
|
const hasUsedExports = Array.isArray(this.originModule.usedExports);
|
|
const hasProvidedExports = Array.isArray(
|
|
importedModule.buildMeta.providedExports
|
|
);
|
|
const activeFromOtherStarExports = this._discoverActiveExportsFromOtherStartExports();
|
|
|
|
// export *
|
|
if (hasUsedExports) {
|
|
// reexport * with known used exports
|
|
if (hasProvidedExports) {
|
|
const map = new Map(
|
|
this.originModule.usedExports
|
|
.filter(id => {
|
|
if (id === "default") return false;
|
|
if (this.activeExports.has(id)) return false;
|
|
if (activeFromOtherStarExports.has(id)) return false;
|
|
if (!importedModule.buildMeta.providedExports.includes(id))
|
|
return false;
|
|
return true;
|
|
})
|
|
.map(item => [item, item])
|
|
);
|
|
|
|
if (map.size === 0) {
|
|
return EMPTY_STAR_MODE;
|
|
}
|
|
|
|
const mode = new ExportMode("safe-reexport");
|
|
mode.module = importedModule;
|
|
mode.map = map;
|
|
return mode;
|
|
}
|
|
|
|
const map = new Map(
|
|
this.originModule.usedExports
|
|
.filter(id => {
|
|
if (id === "default") return false;
|
|
if (this.activeExports.has(id)) return false;
|
|
if (activeFromOtherStarExports.has(id)) return false;
|
|
|
|
return true;
|
|
})
|
|
.map(item => [item, item])
|
|
);
|
|
|
|
if (map.size === 0) {
|
|
return EMPTY_STAR_MODE;
|
|
}
|
|
|
|
const mode = new ExportMode("checked-reexport");
|
|
mode.module = importedModule;
|
|
mode.map = map;
|
|
return mode;
|
|
}
|
|
|
|
if (hasProvidedExports) {
|
|
const map = new Map(
|
|
importedModule.buildMeta.providedExports
|
|
.filter(id => {
|
|
if (id === "default") return false;
|
|
if (this.activeExports.has(id)) return false;
|
|
if (activeFromOtherStarExports.has(id)) return false;
|
|
|
|
return true;
|
|
})
|
|
.map(item => [item, item])
|
|
);
|
|
|
|
if (map.size === 0) {
|
|
return EMPTY_STAR_MODE;
|
|
}
|
|
|
|
const mode = new ExportMode("safe-reexport");
|
|
mode.module = importedModule;
|
|
mode.map = map;
|
|
return mode;
|
|
}
|
|
|
|
const mode = new ExportMode("dynamic-reexport");
|
|
mode.module = importedModule;
|
|
return mode;
|
|
}
|
|
|
|
getReference() {
|
|
const mode = this.getMode(false);
|
|
|
|
switch (mode.type) {
|
|
case "missing":
|
|
case "unused":
|
|
case "empty-star":
|
|
return null;
|
|
|
|
case "reexport-non-harmony-default":
|
|
case "reexport-named-default":
|
|
return new DependencyReference(
|
|
mode.module,
|
|
["default"],
|
|
false,
|
|
this.sourceOrder
|
|
);
|
|
|
|
case "reexport-namespace-object":
|
|
case "reexport-non-harmony-default-strict":
|
|
case "reexport-fake-namespace-object":
|
|
case "rexport-non-harmony-undefined":
|
|
return new DependencyReference(
|
|
mode.module,
|
|
true,
|
|
false,
|
|
this.sourceOrder
|
|
);
|
|
|
|
case "safe-reexport":
|
|
case "checked-reexport":
|
|
return new DependencyReference(
|
|
mode.module,
|
|
Array.from(mode.map.values()),
|
|
false,
|
|
this.sourceOrder
|
|
);
|
|
|
|
case "dynamic-reexport":
|
|
return new DependencyReference(
|
|
mode.module,
|
|
true,
|
|
false,
|
|
this.sourceOrder
|
|
);
|
|
|
|
default:
|
|
throw new Error(`Unknown mode ${mode.type}`);
|
|
}
|
|
}
|
|
|
|
_discoverActiveExportsFromOtherStartExports() {
|
|
if (!this.otherStarExports) return new Set();
|
|
const result = new Set();
|
|
// try to learn impossible exports from other star exports with provided exports
|
|
for (const otherStarExport of this.otherStarExports) {
|
|
const otherImportedModule = otherStarExport._module;
|
|
if (
|
|
otherImportedModule &&
|
|
Array.isArray(otherImportedModule.buildMeta.providedExports)
|
|
) {
|
|
for (const exportName of otherImportedModule.buildMeta
|
|
.providedExports) {
|
|
result.add(exportName);
|
|
}
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
getExports() {
|
|
if (this.name) {
|
|
return {
|
|
exports: [this.name],
|
|
dependencies: undefined
|
|
};
|
|
}
|
|
|
|
const importedModule = this._module;
|
|
|
|
if (!importedModule) {
|
|
// no imported module available
|
|
return {
|
|
exports: null,
|
|
dependencies: undefined
|
|
};
|
|
}
|
|
|
|
if (Array.isArray(importedModule.buildMeta.providedExports)) {
|
|
return {
|
|
exports: importedModule.buildMeta.providedExports.filter(
|
|
id => id !== "default"
|
|
),
|
|
dependencies: [importedModule]
|
|
};
|
|
}
|
|
|
|
if (importedModule.buildMeta.providedExports) {
|
|
return {
|
|
exports: true,
|
|
dependencies: undefined
|
|
};
|
|
}
|
|
|
|
return {
|
|
exports: null,
|
|
dependencies: [importedModule]
|
|
};
|
|
}
|
|
|
|
getWarnings() {
|
|
if (
|
|
this.strictExportPresence ||
|
|
this.originModule.buildMeta.strictHarmonyModule
|
|
) {
|
|
return [];
|
|
}
|
|
return this._getErrors();
|
|
}
|
|
|
|
getErrors() {
|
|
if (
|
|
this.strictExportPresence ||
|
|
this.originModule.buildMeta.strictHarmonyModule
|
|
) {
|
|
return this._getErrors();
|
|
}
|
|
return [];
|
|
}
|
|
|
|
_getErrors() {
|
|
const importedModule = this._module;
|
|
if (!importedModule) {
|
|
return;
|
|
}
|
|
|
|
if (!importedModule.buildMeta || !importedModule.buildMeta.exportsType) {
|
|
// It's not an harmony module
|
|
if (
|
|
this.originModule.buildMeta.strictHarmonyModule &&
|
|
this._id &&
|
|
this._id !== "default"
|
|
) {
|
|
// In strict harmony modules we only support the default export
|
|
return [
|
|
new HarmonyLinkingError(
|
|
`Can't reexport the named export '${this._id}' from non EcmaScript module (only default export is available)`
|
|
)
|
|
];
|
|
}
|
|
return;
|
|
}
|
|
|
|
if (!this._id) {
|
|
return;
|
|
}
|
|
|
|
if (importedModule.isProvided(this._id) !== false) {
|
|
// It's provided or we are not sure
|
|
return;
|
|
}
|
|
|
|
// We are sure that it's not provided
|
|
const idIsNotNameMessage =
|
|
this._id !== this.name ? ` (reexported as '${this.name}')` : "";
|
|
const errorMessage = `"export '${this._id}'${idIsNotNameMessage} was not found in '${this.userRequest}'`;
|
|
return [new HarmonyLinkingError(errorMessage)];
|
|
}
|
|
|
|
updateHash(hash) {
|
|
super.updateHash(hash);
|
|
const hashValue = this.getHashValue(this._module);
|
|
hash.update(hashValue);
|
|
}
|
|
|
|
getHashValue(importedModule) {
|
|
if (!importedModule) {
|
|
return "";
|
|
}
|
|
|
|
const stringifiedUsedExport = JSON.stringify(importedModule.usedExports);
|
|
const stringifiedProvidedExport = JSON.stringify(
|
|
importedModule.buildMeta.providedExports
|
|
);
|
|
return (
|
|
importedModule.used + stringifiedUsedExport + stringifiedProvidedExport
|
|
);
|
|
}
|
|
|
|
disconnect() {
|
|
super.disconnect();
|
|
this.redirectedId = undefined;
|
|
}
|
|
}
|
|
|
|
module.exports = HarmonyExportImportedSpecifierDependency;
|
|
|
|
HarmonyExportImportedSpecifierDependency.Template = class HarmonyExportImportedSpecifierDependencyTemplate extends HarmonyImportDependency.Template {
|
|
harmonyInit(dep, source, runtime, dependencyTemplates) {
|
|
super.harmonyInit(dep, source, runtime, dependencyTemplates);
|
|
const content = this.getContent(dep);
|
|
source.insert(-1, content);
|
|
}
|
|
|
|
getHarmonyInitOrder(dep) {
|
|
if (dep.name) {
|
|
const used = dep.originModule.isUsed(dep.name);
|
|
if (!used) return NaN;
|
|
} else {
|
|
const importedModule = dep._module;
|
|
|
|
const activeFromOtherStarExports = dep._discoverActiveExportsFromOtherStartExports();
|
|
|
|
if (Array.isArray(dep.originModule.usedExports)) {
|
|
// we know which exports are used
|
|
|
|
const unused = dep.originModule.usedExports.every(id => {
|
|
if (id === "default") return true;
|
|
if (dep.activeExports.has(id)) return true;
|
|
if (importedModule.isProvided(id) === false) return true;
|
|
if (activeFromOtherStarExports.has(id)) return true;
|
|
return false;
|
|
});
|
|
if (unused) return NaN;
|
|
} else if (
|
|
dep.originModule.usedExports &&
|
|
importedModule &&
|
|
Array.isArray(importedModule.buildMeta.providedExports)
|
|
) {
|
|
// not sure which exports are used, but we know which are provided
|
|
|
|
const unused = importedModule.buildMeta.providedExports.every(id => {
|
|
if (id === "default") return true;
|
|
if (dep.activeExports.has(id)) return true;
|
|
if (activeFromOtherStarExports.has(id)) return true;
|
|
return false;
|
|
});
|
|
if (unused) return NaN;
|
|
}
|
|
}
|
|
return super.getHarmonyInitOrder(dep);
|
|
}
|
|
|
|
getContent(dep) {
|
|
const mode = dep.getMode(false);
|
|
const module = dep.originModule;
|
|
const importedModule = dep._module;
|
|
const importVar = dep.getImportVar();
|
|
|
|
switch (mode.type) {
|
|
case "missing":
|
|
return `throw new Error(${JSON.stringify(
|
|
`Cannot find module '${mode.userRequest}'`
|
|
)});\n`;
|
|
|
|
case "unused":
|
|
return `${Template.toNormalComment(
|
|
`unused harmony reexport ${mode.name}`
|
|
)}\n`;
|
|
|
|
case "reexport-non-harmony-default":
|
|
return (
|
|
"/* harmony reexport (default from non-harmony) */ " +
|
|
this.getReexportStatement(
|
|
module,
|
|
module.isUsed(mode.name),
|
|
importVar,
|
|
null
|
|
)
|
|
);
|
|
|
|
case "reexport-named-default":
|
|
return (
|
|
"/* harmony reexport (default from named exports) */ " +
|
|
this.getReexportStatement(
|
|
module,
|
|
module.isUsed(mode.name),
|
|
importVar,
|
|
""
|
|
)
|
|
);
|
|
|
|
case "reexport-fake-namespace-object":
|
|
return (
|
|
"/* harmony reexport (fake namespace object from non-harmony) */ " +
|
|
this.getReexportFakeNamespaceObjectStatement(
|
|
module,
|
|
module.isUsed(mode.name),
|
|
importVar
|
|
)
|
|
);
|
|
|
|
case "rexport-non-harmony-undefined":
|
|
return (
|
|
"/* harmony reexport (non default export from non-harmony) */ " +
|
|
this.getReexportStatement(
|
|
module,
|
|
module.isUsed(mode.name),
|
|
"undefined",
|
|
""
|
|
)
|
|
);
|
|
|
|
case "reexport-non-harmony-default-strict":
|
|
return (
|
|
"/* harmony reexport (default from non-harmony) */ " +
|
|
this.getReexportStatement(
|
|
module,
|
|
module.isUsed(mode.name),
|
|
importVar,
|
|
""
|
|
)
|
|
);
|
|
|
|
case "reexport-namespace-object":
|
|
return (
|
|
"/* harmony reexport (module object) */ " +
|
|
this.getReexportStatement(
|
|
module,
|
|
module.isUsed(mode.name),
|
|
importVar,
|
|
""
|
|
)
|
|
);
|
|
|
|
case "empty-star":
|
|
return "/* empty/unused harmony star reexport */";
|
|
|
|
case "safe-reexport":
|
|
return Array.from(mode.map.entries())
|
|
.map(item => {
|
|
return (
|
|
"/* harmony reexport (safe) */ " +
|
|
this.getReexportStatement(
|
|
module,
|
|
module.isUsed(item[0]),
|
|
importVar,
|
|
importedModule.isUsed(item[1])
|
|
) +
|
|
"\n"
|
|
);
|
|
})
|
|
.join("");
|
|
|
|
case "checked-reexport":
|
|
return Array.from(mode.map.entries())
|
|
.map(item => {
|
|
return (
|
|
"/* harmony reexport (checked) */ " +
|
|
this.getConditionalReexportStatement(
|
|
module,
|
|
item[0],
|
|
importVar,
|
|
item[1]
|
|
) +
|
|
"\n"
|
|
);
|
|
})
|
|
.join("");
|
|
|
|
case "dynamic-reexport": {
|
|
const activeExports = new Set([
|
|
...dep.activeExports,
|
|
...dep._discoverActiveExportsFromOtherStartExports()
|
|
]);
|
|
let content =
|
|
"/* harmony reexport (unknown) */ for(var __WEBPACK_IMPORT_KEY__ in " +
|
|
importVar +
|
|
") ";
|
|
|
|
// Filter out exports which are defined by other exports
|
|
// and filter out default export because it cannot be reexported with *
|
|
if (activeExports.size > 0) {
|
|
content +=
|
|
"if(" +
|
|
JSON.stringify(Array.from(activeExports).concat("default")) +
|
|
".indexOf(__WEBPACK_IMPORT_KEY__) < 0) ";
|
|
} else {
|
|
content += "if(__WEBPACK_IMPORT_KEY__ !== 'default') ";
|
|
}
|
|
const exportsName = dep.originModule.exportsArgument;
|
|
return (
|
|
content +
|
|
`(function(key) { __webpack_require__.d(${exportsName}, key, function() { return ${importVar}[key]; }) }(__WEBPACK_IMPORT_KEY__));\n`
|
|
);
|
|
}
|
|
|
|
default:
|
|
throw new Error(`Unknown mode ${mode.type}`);
|
|
}
|
|
}
|
|
|
|
getReexportStatement(module, key, name, valueKey) {
|
|
const exportsName = module.exportsArgument;
|
|
const returnValue = this.getReturnValue(name, valueKey);
|
|
return `__webpack_require__.d(${exportsName}, ${JSON.stringify(
|
|
key
|
|
)}, function() { return ${returnValue}; });\n`;
|
|
}
|
|
|
|
getReexportFakeNamespaceObjectStatement(module, key, name) {
|
|
const exportsName = module.exportsArgument;
|
|
return `__webpack_require__.d(${exportsName}, ${JSON.stringify(
|
|
key
|
|
)}, function() { return __webpack_require__.t(${name}); });\n`;
|
|
}
|
|
|
|
getConditionalReexportStatement(module, key, name, valueKey) {
|
|
if (valueKey === false) {
|
|
return "/* unused export */\n";
|
|
}
|
|
const exportsName = module.exportsArgument;
|
|
const returnValue = this.getReturnValue(name, valueKey);
|
|
return `if(__webpack_require__.o(${name}, ${JSON.stringify(
|
|
valueKey
|
|
)})) __webpack_require__.d(${exportsName}, ${JSON.stringify(
|
|
key
|
|
)}, function() { return ${returnValue}; });\n`;
|
|
}
|
|
|
|
getReturnValue(name, valueKey) {
|
|
if (valueKey === null) {
|
|
return `${name}_default.a`;
|
|
}
|
|
if (valueKey === "") {
|
|
return name;
|
|
}
|
|
if (valueKey === false) {
|
|
return "/* unused export */ undefined";
|
|
}
|
|
|
|
return `${name}[${JSON.stringify(valueKey)}]`;
|
|
}
|
|
};
|