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Chunk.ts
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Chunk.ts
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import MagicString, { Bundle as MagicStringBundle, SourceMap } from 'magic-string';
import { createHash } from '../browser/crypto';
import { relative } from '../browser/path';
import { createInclusionContext } from './ast/ExecutionContext';
import ExportDefaultDeclaration from './ast/nodes/ExportDefaultDeclaration';
import FunctionDeclaration from './ast/nodes/FunctionDeclaration';
import { UNDEFINED_EXPRESSION } from './ast/values';
import ExportDefaultVariable from './ast/variables/ExportDefaultVariable';
import ExportShimVariable from './ast/variables/ExportShimVariable';
import GlobalVariable from './ast/variables/GlobalVariable';
import LocalVariable from './ast/variables/LocalVariable';
import NamespaceVariable from './ast/variables/NamespaceVariable';
import Variable from './ast/variables/Variable';
import ExternalModule from './ExternalModule';
import finalisers from './finalisers/index';
import Graph from './Graph';
import Module from './Module';
import {
DecodedSourceMapOrMissing,
GlobalsOption,
OutputOptions,
PreRenderedChunk,
RenderedChunk,
RenderedModule
} from './rollup/types';
import { Addons } from './utils/addons';
import { toBase64 } from './utils/base64';
import { collapseSourcemaps } from './utils/collapseSourcemaps';
import { deconflictChunk } from './utils/deconflictChunk';
import { error } from './utils/error';
import { sortByExecutionOrder } from './utils/executionOrder';
import getIndentString from './utils/getIndentString';
import { makeLegal } from './utils/identifierHelpers';
import { basename, dirname, extname, isAbsolute, normalize, resolve } from './utils/path';
import relativeId, { getAliasName } from './utils/relativeId';
import renderChunk from './utils/renderChunk';
import { RenderOptions } from './utils/renderHelpers';
import { makeUnique, renderNamePattern } from './utils/renderNamePattern';
import { RESERVED_NAMES } from './utils/reservedNames';
import { sanitizeFileName } from './utils/sanitizeFileName';
import { timeEnd, timeStart } from './utils/timers';
import { INTEROP_DEFAULT_VARIABLE, MISSING_EXPORT_SHIM_VARIABLE } from './utils/variableNames';
export interface ModuleDeclarations {
dependencies: ModuleDeclarationDependency[];
exports: ChunkExports;
}
export interface ModuleDeclarationDependency {
// these used as interop signifiers
exportsDefault: boolean;
exportsNames: boolean;
globalName: string;
id: string;
imports?: ImportSpecifier[];
isChunk: boolean;
name: string;
namedExportsMode: boolean;
reexports?: ReexportSpecifier[];
}
export type ChunkDependencies = ModuleDeclarationDependency[];
export type ChunkExports = {
exported: string;
hoisted: boolean;
local: string;
uninitialized: boolean;
}[];
export interface ReexportSpecifier {
imported: string;
needsLiveBinding: boolean;
reexported: string;
}
export interface ImportSpecifier {
imported: string;
local: string;
}
interface FacadeName {
fileName?: string;
name?: string;
}
const NON_ASSET_EXTENSIONS = ['.js', '.jsx', '.ts', '.tsx'];
function getGlobalName(
module: ExternalModule,
globals: GlobalsOption,
graph: Graph,
hasExports: boolean
) {
let globalName: string | undefined;
if (typeof globals === 'function') {
globalName = globals(module.id);
} else if (globals) {
globalName = globals[module.id];
}
if (globalName) {
return globalName;
}
if (hasExports) {
graph.warn({
code: 'MISSING_GLOBAL_NAME',
guess: module.variableName,
message: `No name was provided for external module '${module.id}' in output.globals – guessing '${module.variableName}'`,
source: module.id
});
return module.variableName;
}
}
export function isChunkRendered(chunk: Chunk): boolean {
return !chunk.isEmpty || chunk.entryModules.length > 0 || chunk.manualChunkAlias !== null;
}
export default class Chunk {
private static generateFacade(
graph: Graph,
facadedModule: Module,
facadeName: FacadeName
): Chunk {
const chunk = new Chunk(graph, []);
chunk.assignFacadeName(facadeName, facadedModule);
if (!facadedModule.facadeChunk) {
facadedModule.facadeChunk = chunk;
}
chunk.dependencies = [facadedModule.chunk as Chunk];
chunk.dynamicDependencies = [];
chunk.facadeModule = facadedModule;
for (const exportName of facadedModule.getAllExportNames()) {
const tracedVariable = facadedModule.getVariableForExportName(exportName);
chunk.exports.add(tracedVariable);
chunk.exportNames[exportName] = tracedVariable;
}
return chunk;
}
entryModules: Module[] = [];
execIndex: number;
exportMode: 'none' | 'named' | 'default' = 'named';
facadeModule: Module | null = null;
graph: Graph;
id: string | null = null;
indentString: string = undefined as any;
isEmpty: boolean;
manualChunkAlias: string | null = null;
orderedModules: Module[];
renderedModules?: {
[moduleId: string]: RenderedModule;
};
usedModules: Module[] = undefined as any;
variableName = 'chunk';
private dependencies: (ExternalModule | Chunk)[] = undefined as any;
private dynamicDependencies: (ExternalModule | Chunk)[] = undefined as any;
private exportNames: { [name: string]: Variable } = Object.create(null);
private exports = new Set<Variable>();
private fileName: string | null = null;
private imports = new Set<Variable>();
private name: string | null = null;
private needsExportsShim = false;
private renderedDeclarations: {
dependencies: ChunkDependencies;
exports: ChunkExports;
} = undefined as any;
private renderedHash: string = undefined as any;
private renderedModuleSources = new Map<Module, MagicString>();
private renderedSource: MagicStringBundle | null = null;
private renderedSourceLength: number = undefined as any;
private sortedExportNames: string[] | null = null;
constructor(graph: Graph, orderedModules: Module[]) {
this.graph = graph;
this.orderedModules = orderedModules;
this.execIndex = orderedModules.length > 0 ? orderedModules[0].execIndex : Infinity;
this.isEmpty = true;
for (const module of orderedModules) {
if (this.isEmpty && module.isIncluded()) {
this.isEmpty = false;
}
if (module.manualChunkAlias) {
this.manualChunkAlias = module.manualChunkAlias;
}
module.chunk = this;
if (
module.isEntryPoint ||
module.dynamicallyImportedBy.some(module => orderedModules.indexOf(module) === -1)
) {
this.entryModules.push(module);
}
}
const moduleForNaming =
this.entryModules[0] || this.orderedModules[this.orderedModules.length - 1];
if (moduleForNaming) {
this.variableName = makeLegal(
basename(
moduleForNaming.chunkName ||
moduleForNaming.manualChunkAlias ||
getAliasName(moduleForNaming.id)
)
);
}
}
canModuleBeFacade(moduleExportNamesByVariable: Map<Variable, string[]>): boolean {
for (const exposedVariable of this.exports) {
if (!moduleExportNamesByVariable.has(exposedVariable)) {
return false;
}
}
return true;
}
generateFacades(): Chunk[] {
const facades: Chunk[] = [];
for (const module of this.entryModules) {
const requiredFacades: FacadeName[] = Array.from(module.userChunkNames).map(name => ({
name
}));
if (requiredFacades.length === 0 && module.isUserDefinedEntryPoint) {
requiredFacades.push({});
}
requiredFacades.push(...Array.from(module.chunkFileNames).map(fileName => ({ fileName })));
if (requiredFacades.length === 0) {
requiredFacades.push({});
}
if (!this.facadeModule) {
const exportNamesByVariable = module.getExportNamesByVariable();
if (this.graph.preserveModules || this.canModuleBeFacade(exportNamesByVariable)) {
this.facadeModule = module;
module.facadeChunk = this;
for (const [variable, exportNames] of exportNamesByVariable) {
for (const exportName of exportNames) {
this.exportNames[exportName] = variable;
}
}
this.assignFacadeName(requiredFacades.shift() as FacadeName, module);
}
}
for (const facadeName of requiredFacades) {
facades.push(Chunk.generateFacade(this.graph, module, facadeName));
}
}
return facades;
}
generateId(
addons: Addons,
options: OutputOptions,
existingNames: Record<string, any>,
includeHash: boolean
): string {
if (this.fileName !== null) {
return this.fileName;
}
const [pattern, patternName] =
this.facadeModule && this.facadeModule.isUserDefinedEntryPoint
? [options.entryFileNames || '[name].js', 'output.entryFileNames']
: [options.chunkFileNames || '[name]-[hash].js', 'output.chunkFileNames'];
return makeUnique(
renderNamePattern(pattern, patternName, {
format: () => (options.format === 'es' ? 'esm' : (options.format as string)),
hash: () =>
includeHash
? this.computeContentHashWithDependencies(addons, options, existingNames)
: '[hash]',
name: () => this.getChunkName()
}),
existingNames
);
}
generateIdPreserveModules(
preserveModulesRelativeDir: string,
options: OutputOptions,
existingNames: Record<string, any>
): string {
const id = this.orderedModules[0].id;
const sanitizedId = sanitizeFileName(id);
let path: string;
if (isAbsolute(id)) {
const extension = extname(id);
const name = renderNamePattern(
options.entryFileNames ||
(NON_ASSET_EXTENSIONS.includes(extension) ? '[name].js' : '[name][extname].js'),
'output.entryFileNames',
{
ext: () => extension.substr(1),
extname: () => extension,
format: () => (options.format === 'es' ? 'esm' : (options.format as string)),
name: () => this.getChunkName()
}
);
path = relative(preserveModulesRelativeDir, `${dirname(sanitizedId)}/${name}`);
} else {
path = `_virtual/${basename(sanitizedId)}`;
}
return makeUnique(normalize(path), existingNames);
}
generateInternalExports(options: OutputOptions) {
if (this.facadeModule !== null) return;
const mangle = options.format === 'system' || options.format === 'es' || options.compact;
let i = 0,
safeExportName: string;
this.exportNames = Object.create(null);
this.sortedExportNames = null;
if (mangle) {
for (const variable of this.exports) {
const suggestedName = variable.name[0];
if (!this.exportNames[suggestedName]) {
this.exportNames[suggestedName] = variable;
} else {
do {
safeExportName = toBase64(++i);
// skip past leading number identifiers
if (safeExportName.charCodeAt(0) === 49 /* '1' */) {
i += 9 * 64 ** (safeExportName.length - 1);
safeExportName = toBase64(i);
}
} while (RESERVED_NAMES[safeExportName] || this.exportNames[safeExportName]);
this.exportNames[safeExportName] = variable;
}
}
} else {
for (const variable of this.exports) {
i = 0;
safeExportName = variable.name;
while (this.exportNames[safeExportName]) {
safeExportName = variable.name + '$' + ++i;
}
this.exportNames[safeExportName] = variable;
}
}
}
getChunkName(): string {
return this.name || (this.name = sanitizeFileName(this.getFallbackChunkName()));
}
getDynamicImportIds(): string[] {
return this.dynamicDependencies.map(chunk => chunk.id).filter(Boolean) as string[];
}
getExportNames(): string[] {
return (
this.sortedExportNames || (this.sortedExportNames = Object.keys(this.exportNames).sort())
);
}
getImportIds(): string[] {
return this.dependencies.map(chunk => chunk.id).filter(Boolean) as string[];
}
getRenderedHash(): string {
if (this.renderedHash) return this.renderedHash;
if (!this.renderedSource) return '';
const hash = createHash();
const hashAugmentation = this.calculateHashAugmentation();
hash.update(hashAugmentation);
hash.update(this.renderedSource.toString());
hash.update(
this.getExportNames()
.map(exportName => {
const variable = this.exportNames[exportName];
return `${relativeId((variable.module as Module).id).replace(/\\/g, '/')}:${
variable.name
}:${exportName}`;
})
.join(',')
);
return (this.renderedHash = hash.digest('hex'));
}
getRenderedSourceLength() {
if (this.renderedSourceLength !== undefined) return this.renderedSourceLength;
return (this.renderedSourceLength = (this.renderedSource as MagicStringBundle).length());
}
getVariableExportName(variable: Variable): string {
if (this.graph.preserveModules && variable instanceof NamespaceVariable) {
return '*';
}
for (const exportName of Object.keys(this.exportNames)) {
if (this.exportNames[exportName] === variable) return exportName;
}
throw new Error(`Internal Error: Could not find export name for variable ${variable.name}.`);
}
link() {
const dependencies: Set<Chunk | ExternalModule> = new Set();
const dynamicDependencies: Set<Chunk | ExternalModule> = new Set();
for (const module of this.orderedModules) {
this.addDependenciesToChunk(module.getTransitiveDependencies(), dependencies);
this.addDependenciesToChunk(module.dynamicDependencies, dynamicDependencies);
this.setUpChunkImportsAndExportsForModule(module);
}
this.dependencies = Array.from(dependencies);
this.dynamicDependencies = Array.from(dynamicDependencies);
}
/*
* Performs a full merge of another chunk into this chunk
* chunkList allows updating references in other chunks for the merged chunk to this chunk
* A new facade will be added to chunkList if tainting exports of either as an entry point
*/
merge(chunk: Chunk, chunkList: Chunk[], options: OutputOptions, inputBase: string) {
if (this.facadeModule !== null || chunk.facadeModule !== null)
throw new Error('Internal error: Code splitting chunk merges not supported for facades');
for (const module of chunk.orderedModules) {
module.chunk = this;
this.orderedModules.push(module);
}
for (const variable of chunk.imports) {
if (!this.imports.has(variable) && (variable.module as Module).chunk !== this) {
this.imports.add(variable);
}
}
// NB detect when exported variables are orphaned by the merge itself
// (involves reverse tracing dependents)
for (const variable of chunk.exports) {
if (!this.exports.has(variable)) {
this.exports.add(variable);
}
}
const thisOldExportNames = this.exportNames;
// regenerate internal names
this.generateInternalExports(options);
const updateRenderedDeclaration = (
dep: ModuleDeclarationDependency,
oldExportNames: Record<string, Variable>
) => {
if (dep.imports) {
for (const impt of dep.imports) {
impt.imported = this.getVariableExportName(oldExportNames[impt.imported]);
}
}
if (dep.reexports) {
for (const reexport of dep.reexports) {
reexport.imported = this.getVariableExportName(oldExportNames[reexport.imported]);
}
}
};
const mergeRenderedDeclaration = (
into: ModuleDeclarationDependency,
from: ModuleDeclarationDependency
) => {
if (from.imports) {
if (!into.imports) {
into.imports = from.imports;
} else {
into.imports = into.imports.concat(from.imports);
}
}
if (from.reexports) {
if (!into.reexports) {
into.reexports = from.reexports;
} else {
into.reexports = into.reexports.concat(from.reexports);
}
}
if (!into.exportsNames && from.exportsNames) {
into.exportsNames = true;
}
if (!into.exportsDefault && from.exportsDefault) {
into.exportsDefault = true;
}
into.name = this.variableName;
};
// go through the other chunks and update their dependencies
// also update their import and reexport names in the process
for (const c of chunkList) {
let includedDeclaration: ModuleDeclarationDependency = undefined as any;
for (let i = 0; i < c.dependencies.length; i++) {
const dep = c.dependencies[i];
if ((dep === chunk || dep === this) && includedDeclaration) {
const duplicateDeclaration = c.renderedDeclarations.dependencies[i];
updateRenderedDeclaration(
duplicateDeclaration,
dep === chunk ? chunk.exportNames : thisOldExportNames
);
mergeRenderedDeclaration(includedDeclaration, duplicateDeclaration);
c.renderedDeclarations.dependencies.splice(i, 1);
c.dependencies.splice(i--, 1);
} else if (dep === chunk) {
c.dependencies[i] = this;
includedDeclaration = c.renderedDeclarations.dependencies[i];
updateRenderedDeclaration(includedDeclaration, chunk.exportNames);
} else if (dep === this) {
includedDeclaration = c.renderedDeclarations.dependencies[i];
updateRenderedDeclaration(includedDeclaration, thisOldExportNames);
}
}
}
// re-render the merged chunk
this.preRender(options, inputBase);
}
// prerender allows chunk hashes and names to be generated before finalizing
preRender(options: OutputOptions, inputBase: string) {
timeStart('render modules', 3);
const magicString = new MagicStringBundle({ separator: options.compact ? '' : '\n\n' });
this.usedModules = [];
this.indentString = options.compact ? '' : getIndentString(this.orderedModules, options);
const n = options.compact ? '' : '\n';
const _ = options.compact ? '' : ' ';
const renderOptions: RenderOptions = {
compact: options.compact as boolean,
dynamicImportFunction: options.dynamicImportFunction as string,
format: options.format as string,
freeze: options.freeze !== false,
indent: this.indentString,
namespaceToStringTag: options.namespaceToStringTag === true,
varOrConst: options.preferConst ? 'const' : 'var'
};
// Make sure the direct dependencies of a chunk are present to maintain execution order
for (const { module } of this.imports) {
const chunkOrExternal = (module instanceof Module ? module.chunk : module) as
| Chunk
| ExternalModule;
if (this.dependencies.indexOf(chunkOrExternal) === -1) {
this.dependencies.push(chunkOrExternal);
}
}
// for static and dynamic entry points, inline the execution list to avoid loading latency
if (!this.graph.preserveModules && this.facadeModule !== null) {
for (const dep of this.dependencies) {
if (dep instanceof Chunk) this.inlineChunkDependencies(dep, true);
}
}
// prune empty dependency chunks, inlining their side-effect dependencies
for (let i = 0; i < this.dependencies.length; i++) {
const dep = this.dependencies[i];
if (dep instanceof Chunk && dep.isEmpty) {
this.dependencies.splice(i--, 1);
this.inlineChunkDependencies(dep, false);
}
}
sortByExecutionOrder(this.dependencies);
this.prepareDynamicImports();
this.setIdentifierRenderResolutions(options);
let hoistedSource = '';
const renderedModules = (this.renderedModules = Object.create(null));
for (const module of this.orderedModules) {
let renderedLength = 0;
if (module.isIncluded()) {
const source = module.render(renderOptions).trim();
if (options.compact && source.lastLine().indexOf('//') !== -1) source.append('\n');
const namespace = module.getOrCreateNamespace();
if (namespace.included || source.length() > 0) {
renderedLength = source.length();
this.renderedModuleSources.set(module, source);
magicString.addSource(source);
this.usedModules.push(module);
if (namespace.included && !this.graph.preserveModules) {
const rendered = namespace.renderBlock(renderOptions);
if (namespace.renderFirst()) hoistedSource += n + rendered;
else magicString.addSource(new MagicString(rendered));
}
}
}
const { renderedExports, removedExports } = module.getRenderedExports();
renderedModules[module.id] = {
originalLength: module.originalCode.length,
removedExports,
renderedExports,
renderedLength
};
}
if (hoistedSource) magicString.prepend(hoistedSource + n + n);
if (this.needsExportsShim) {
magicString.prepend(
`${n}${renderOptions.varOrConst} ${MISSING_EXPORT_SHIM_VARIABLE}${_}=${_}void 0;${n}${n}`
);
}
if (options.compact) {
this.renderedSource = magicString;
} else {
this.renderedSource = magicString.trim();
}
this.renderedSourceLength = undefined as any;
this.renderedHash = undefined as any;
if (this.getExportNames().length === 0 && this.getImportIds().length === 0 && this.isEmpty) {
this.graph.warn({
code: 'EMPTY_BUNDLE',
message: 'Generated an empty bundle'
});
}
this.setExternalRenderPaths(options, inputBase);
this.renderedDeclarations = {
dependencies: this.getChunkDependencyDeclarations(options),
exports: this.exportMode === 'none' ? [] : this.getChunkExportDeclarations()
};
timeEnd('render modules', 3);
}
render(options: OutputOptions, addons: Addons, outputChunk: RenderedChunk) {
timeStart('render format', 3);
if (!this.renderedSource)
throw new Error('Internal error: Chunk render called before preRender');
const format = options.format as string;
const finalise = finalisers[format];
if (!finalise) {
error({
code: 'INVALID_OPTION',
message: `Invalid format: ${format} - valid options are ${Object.keys(finalisers).join(
', '
)}.`
});
}
if (options.dynamicImportFunction && format !== 'es') {
this.graph.warn({
code: 'INVALID_OPTION',
message: '"output.dynamicImportFunction" is ignored for formats other than "esm".'
});
}
// populate ids in the rendered declarations only here
// as chunk ids known only after prerender
for (let i = 0; i < this.dependencies.length; i++) {
const dep = this.dependencies[i];
if (dep instanceof ExternalModule && !dep.renormalizeRenderPath) continue;
const renderedDependency = this.renderedDeclarations.dependencies[i];
const depId = dep instanceof ExternalModule ? renderedDependency.id : (dep.id as string);
if (dep instanceof Chunk) renderedDependency.namedExportsMode = dep.exportMode !== 'default';
renderedDependency.id = this.getRelativePath(depId);
}
this.finaliseDynamicImports(format);
this.finaliseImportMetas(format);
const hasExports =
this.renderedDeclarations.exports.length !== 0 ||
this.renderedDeclarations.dependencies.some(
dep => (dep.reexports && dep.reexports.length !== 0) as boolean
);
let usesTopLevelAwait = false;
const accessedGlobals = new Set<string>();
for (const module of this.orderedModules) {
if (module.usesTopLevelAwait) {
usesTopLevelAwait = true;
}
const accessedGlobalVariablesByFormat = module.scope.accessedGlobalVariablesByFormat;
const accessedGlobalVariables =
accessedGlobalVariablesByFormat && accessedGlobalVariablesByFormat.get(format);
if (accessedGlobalVariables) {
for (const name of accessedGlobalVariables) {
accessedGlobals.add(name);
}
}
}
if (usesTopLevelAwait && format !== 'es' && format !== 'system') {
error({
code: 'INVALID_TLA_FORMAT',
message: `Module format ${format} does not support top-level await. Use the "es" or "system" output formats rather.`
});
}
const magicString = finalise(
this.renderedSource,
{
accessedGlobals,
dependencies: this.renderedDeclarations.dependencies,
exports: this.renderedDeclarations.exports,
hasExports,
indentString: this.indentString,
intro: addons.intro as string,
isEntryModuleFacade: this.facadeModule !== null && this.facadeModule.isEntryPoint,
namedExportsMode: this.exportMode !== 'default',
outro: addons.outro as string,
usesTopLevelAwait,
varOrConst: options.preferConst ? 'const' : 'var',
warn: this.graph.warn.bind(this.graph)
},
options
);
if (addons.banner) magicString.prepend(addons.banner);
if (addons.footer) magicString.append(addons.footer);
const prevCode = magicString.toString();
timeEnd('render format', 3);
let map: SourceMap = null as any;
const chunkSourcemapChain: DecodedSourceMapOrMissing[] = [];
return renderChunk({
chunk: this,
code: prevCode,
graph: this.graph,
options,
renderChunk: outputChunk,
sourcemapChain: chunkSourcemapChain
}).then((code: string) => {
if (options.sourcemap) {
timeStart('sourcemap', 3);
let file: string;
if (options.file) file = resolve(options.sourcemapFile || options.file);
else if (options.dir) file = resolve(options.dir, this.id as string);
else file = resolve(this.id as string);
const decodedMap = magicString.generateDecodedMap({});
map = collapseSourcemaps(
this,
file,
decodedMap,
this.usedModules,
chunkSourcemapChain,
options.sourcemapExcludeSources as boolean
);
map.sources = map.sources.map(sourcePath =>
normalize(
options.sourcemapPathTransform ? options.sourcemapPathTransform(sourcePath) : sourcePath
)
);
timeEnd('sourcemap', 3);
}
if (options.compact !== true && code[code.length - 1] !== '\n') code += '\n';
return { code, map };
});
}
visitDependencies(handleDependency: (dependency: Chunk | ExternalModule) => void) {
const toBeVisited: (Chunk | ExternalModule)[] = [this];
const visited: Set<Chunk | ExternalModule> = new Set();
for (const current of toBeVisited) {
handleDependency(current);
if (current instanceof ExternalModule) continue;
for (const dependency of current.dependencies.concat(current.dynamicDependencies)) {
if (!visited.has(dependency)) {
visited.add(dependency);
toBeVisited.push(dependency);
}
}
}
}
visitStaticDependenciesUntilCondition(
isConditionSatisfied: (dep: Chunk | ExternalModule) => any
): boolean {
const seen = new Set<Chunk | ExternalModule>();
function visitDep(dep: Chunk | ExternalModule): boolean {
if (seen.has(dep)) return undefined as any;
seen.add(dep);
if (dep instanceof Chunk) {
for (const subDep of dep.dependencies) {
if (visitDep(subDep)) return true;
}
}
return isConditionSatisfied(dep) === true;
}
return visitDep(this);
}
private addDependenciesToChunk(
moduleDependencies: (Module | ExternalModule)[],
chunkDependencies: Set<Chunk | ExternalModule>
) {
for (const depModule of moduleDependencies) {
if (depModule.chunk === this) {
continue;
}
let dependency: Chunk | ExternalModule;
if (depModule instanceof Module) {
dependency = depModule.chunk as Chunk;
} else {
if (!(depModule.used || depModule.moduleSideEffects)) {
continue;
}
dependency = depModule;
}
chunkDependencies.add(dependency);
}
}
private assignFacadeName({ fileName, name }: FacadeName, facadedModule: Module) {
if (fileName) {
this.fileName = fileName;
} else {
this.name = sanitizeFileName(
name || facadedModule.chunkName || getAliasName(facadedModule.id)
);
}
}
private calculateHashAugmentation(): string {
const facadeModule = this.facadeModule;
const getChunkName = this.getChunkName.bind(this);
const preRenderedChunk = {
dynamicImports: this.getDynamicImportIds(),
exports: this.getExportNames(),
facadeModuleId: facadeModule && facadeModule.id,
imports: this.getImportIds(),
isDynamicEntry: facadeModule !== null && facadeModule.dynamicallyImportedBy.length > 0,
isEntry: facadeModule !== null && facadeModule.isEntryPoint,
modules: this.renderedModules,
get name() {
return getChunkName();
}
} as PreRenderedChunk;
const hashAugmentation = this.graph.pluginDriver.hookReduceValueSync(
'augmentChunkHash',
'',
[preRenderedChunk],
(hashAugmentation, pluginHash) => {
if (pluginHash) {
hashAugmentation += pluginHash;
}
return hashAugmentation;
}
);
return hashAugmentation;
}
private computeContentHashWithDependencies(
addons: Addons,
options: OutputOptions,
existingNames: Record<string, any>
): string {
const hash = createHash();
hash.update(
[addons.intro, addons.outro, addons.banner, addons.footer].map(addon => addon || '').join(':')
);
hash.update(options.format as string);
this.visitDependencies(dep => {
if (dep instanceof ExternalModule) {
hash.update(':' + dep.renderPath);
} else {
hash.update(dep.getRenderedHash());
hash.update(dep.generateId(addons, options, existingNames, false));
}
});
return hash.digest('hex').substr(0, 8);
}
private finaliseDynamicImports(format: string) {
for (const [module, code] of this.renderedModuleSources) {
for (const { node, resolution } of module.dynamicImports) {
if (!resolution) continue;
if (resolution instanceof Module) {
if (resolution.chunk !== this && isChunkRendered(resolution.chunk as Chunk)) {
const resolutionChunk = resolution.facadeChunk || (resolution.chunk as Chunk);
node.renderFinalResolution(
code,
`'${this.getRelativePath(resolutionChunk.id as string)}'`,
format
);
}
} else {
node.renderFinalResolution(
code,
resolution instanceof ExternalModule
? `'${
resolution.renormalizeRenderPath
? this.getRelativePath(resolution.renderPath)
: resolution.id
}'`
: resolution,
format
);
}
}
}
}
private finaliseImportMetas(format: string): void {
for (const [module, code] of this.renderedModuleSources) {
for (const importMeta of module.importMetas) {
importMeta.renderFinalMechanism(code, this.id as string, format, this.graph.pluginDriver);
}
}
}
private getChunkDependencyDeclarations(options: OutputOptions): ChunkDependencies {
const reexportDeclarations = new Map<Chunk | ExternalModule, ReexportSpecifier[]>();
for (let exportName of this.getExportNames()) {
let exportChunk: Chunk | ExternalModule;
let importName: string;
let needsLiveBinding = false;
if (exportName[0] === '*') {
needsLiveBinding = options.externalLiveBindings !== false;
exportChunk = this.graph.moduleById.get(exportName.substr(1)) as ExternalModule;
importName = exportName = '*';
} else {
const variable = this.exportNames[exportName];
const module = variable.module;
// skip local exports
if (!module || module.chunk === this) continue;
if (module instanceof Module) {
exportChunk = module.chunk as Chunk;
importName = exportChunk.getVariableExportName(variable);
needsLiveBinding = variable.isReassigned;
} else {
exportChunk = module;
importName = variable.name;
needsLiveBinding = options.externalLiveBindings !== false;
}
}
let reexportDeclaration = reexportDeclarations.get(exportChunk);
if (!reexportDeclaration) reexportDeclarations.set(exportChunk, (reexportDeclaration = []));
reexportDeclaration.push({ imported: importName, reexported: exportName, needsLiveBinding });
}
const renderedImports = new Set<Variable>();
const dependencies: ChunkDependencies = [];
for (const dep of this.dependencies) {
const imports: ImportSpecifier[] = [];
for (const variable of this.imports) {
const renderedVariable =
variable instanceof ExportDefaultVariable ? variable.getOriginalVariable() : variable;
if (
(variable.module instanceof Module
? variable.module.chunk === dep
: variable.module === dep) &&
!renderedImports.has(renderedVariable)
) {
renderedImports.add(renderedVariable);
imports.push({
imported:
variable.module instanceof ExternalModule
? variable.name
: ((variable.module as Module).chunk as Chunk).getVariableExportName(variable),
local: variable.getName()
});
}
}
const reexports = reexportDeclarations.get(dep);
let exportsNames: boolean, exportsDefault: boolean;
let namedExportsMode = true;
if (dep instanceof ExternalModule) {
exportsNames = dep.exportsNames || dep.exportsNamespace;
exportsDefault = 'default' in dep.declarations;
} else {
exportsNames = true;
// we don't want any interop patterns to trigger
exportsDefault = false;
namedExportsMode = dep.exportMode !== 'default';
}
let id: string = undefined as any;
let globalName: string = undefined as any;
if (dep instanceof ExternalModule) {
id = dep.renderPath;
if (options.format === 'umd' || options.format === 'iife') {
globalName = getGlobalName(
dep,
options.globals as GlobalsOption,
this.graph,
exportsNames || exportsDefault
) as string;
}
}