node-ejs-renderer/node_modules/webpack/lib/RuntimeTemplate.js
2024-06-09 13:55:01 -04:00

1132 lines
34 KiB
JavaScript

/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
"use strict";
const InitFragment = require("./InitFragment");
const RuntimeGlobals = require("./RuntimeGlobals");
const Template = require("./Template");
const { equals } = require("./util/ArrayHelpers");
const compileBooleanMatcher = require("./util/compileBooleanMatcher");
const propertyAccess = require("./util/propertyAccess");
const { forEachRuntime, subtractRuntime } = require("./util/runtime");
/** @typedef {import("../declarations/WebpackOptions").Environment} Environment */
/** @typedef {import("../declarations/WebpackOptions").OutputNormalized} OutputOptions */
/** @typedef {import("./AsyncDependenciesBlock")} AsyncDependenciesBlock */
/** @typedef {import("./Chunk")} Chunk */
/** @typedef {import("./ChunkGraph")} ChunkGraph */
/** @typedef {import("./CodeGenerationResults")} CodeGenerationResults */
/** @typedef {import("./CodeGenerationResults").CodeGenerationResult} CodeGenerationResult */
/** @typedef {import("./Compilation")} Compilation */
/** @typedef {import("./Dependency")} Dependency */
/** @typedef {import("./Module")} Module */
/** @typedef {import("./Module").BuildMeta} BuildMeta */
/** @typedef {import("./Module").RuntimeRequirements} RuntimeRequirements */
/** @typedef {import("./ModuleGraph")} ModuleGraph */
/** @typedef {import("./RequestShortener")} RequestShortener */
/** @typedef {import("./util/runtime").RuntimeSpec} RuntimeSpec */
/**
* @param {Module} module the module
* @param {ChunkGraph} chunkGraph the chunk graph
* @returns {string} error message
*/
const noModuleIdErrorMessage = (module, chunkGraph) => {
return `Module ${module.identifier()} has no id assigned.
This should not happen.
It's in these chunks: ${
Array.from(
chunkGraph.getModuleChunksIterable(module),
c => c.name || c.id || c.debugId
).join(", ") || "none"
} (If module is in no chunk this indicates a bug in some chunk/module optimization logic)
Module has these incoming connections: ${Array.from(
chunkGraph.moduleGraph.getIncomingConnections(module),
connection =>
`\n - ${
connection.originModule && connection.originModule.identifier()
} ${connection.dependency && connection.dependency.type} ${
(connection.explanations &&
Array.from(connection.explanations).join(", ")) ||
""
}`
).join("")}`;
};
/**
* @param {string | undefined} definition global object definition
* @returns {string | undefined} save to use global object
*/
function getGlobalObject(definition) {
if (!definition) return definition;
const trimmed = definition.trim();
if (
// identifier, we do not need real identifier regarding ECMAScript/Unicode
trimmed.match(/^[_\p{L}][_0-9\p{L}]*$/iu) ||
// iife
// call expression
// expression in parentheses
trimmed.match(/^([_\p{L}][_0-9\p{L}]*)?\(.*\)$/iu)
)
return trimmed;
return `Object(${trimmed})`;
}
class RuntimeTemplate {
/**
* @param {Compilation} compilation the compilation
* @param {OutputOptions} outputOptions the compilation output options
* @param {RequestShortener} requestShortener the request shortener
*/
constructor(compilation, outputOptions, requestShortener) {
this.compilation = compilation;
this.outputOptions = outputOptions || {};
this.requestShortener = requestShortener;
this.globalObject =
/** @type {string} */
(getGlobalObject(outputOptions.globalObject));
this.contentHashReplacement = "X".repeat(
/** @type {NonNullable<OutputOptions["hashDigestLength"]>} */
(outputOptions.hashDigestLength)
);
}
isIIFE() {
return this.outputOptions.iife;
}
isModule() {
return this.outputOptions.module;
}
supportsConst() {
return /** @type {Environment} */ (this.outputOptions.environment).const;
}
supportsArrowFunction() {
return /** @type {Environment} */ (this.outputOptions.environment)
.arrowFunction;
}
supportsAsyncFunction() {
return /** @type {Environment} */ (this.outputOptions.environment)
.asyncFunction;
}
supportsOptionalChaining() {
return /** @type {Environment} */ (this.outputOptions.environment)
.optionalChaining;
}
supportsForOf() {
return /** @type {Environment} */ (this.outputOptions.environment).forOf;
}
supportsDestructuring() {
return /** @type {Environment} */ (this.outputOptions.environment)
.destructuring;
}
supportsBigIntLiteral() {
return /** @type {Environment} */ (this.outputOptions.environment)
.bigIntLiteral;
}
supportsDynamicImport() {
return /** @type {Environment} */ (this.outputOptions.environment)
.dynamicImport;
}
supportsEcmaScriptModuleSyntax() {
return /** @type {Environment} */ (this.outputOptions.environment).module;
}
supportTemplateLiteral() {
return /** @type {Environment} */ (this.outputOptions.environment)
.templateLiteral;
}
/**
* @param {string} returnValue return value
* @param {string} args arguments
* @returns {string} returning function
*/
returningFunction(returnValue, args = "") {
return this.supportsArrowFunction()
? `(${args}) => (${returnValue})`
: `function(${args}) { return ${returnValue}; }`;
}
/**
* @param {string} args arguments
* @param {string | string[]} body body
* @returns {string} basic function
*/
basicFunction(args, body) {
return this.supportsArrowFunction()
? `(${args}) => {\n${Template.indent(body)}\n}`
: `function(${args}) {\n${Template.indent(body)}\n}`;
}
/**
* @param {Array<string|{expr: string}>} args args
* @returns {string} result expression
*/
concatenation(...args) {
const len = args.length;
if (len === 2) return this._es5Concatenation(args);
if (len === 0) return '""';
if (len === 1) {
return typeof args[0] === "string"
? JSON.stringify(args[0])
: `"" + ${args[0].expr}`;
}
if (!this.supportTemplateLiteral()) return this._es5Concatenation(args);
// cost comparison between template literal and concatenation:
// both need equal surroundings: `xxx` vs "xxx"
// template literal has constant cost of 3 chars for each expression
// es5 concatenation has cost of 3 + n chars for n expressions in row
// when a es5 concatenation ends with an expression it reduces cost by 3
// when a es5 concatenation starts with an single expression it reduces cost by 3
// e. g. `${a}${b}${c}` (3*3 = 9) is longer than ""+a+b+c ((3+3)-3 = 3)
// e. g. `x${a}x${b}x${c}x` (3*3 = 9) is shorter than "x"+a+"x"+b+"x"+c+"x" (4+4+4 = 12)
let templateCost = 0;
let concatenationCost = 0;
let lastWasExpr = false;
for (const arg of args) {
const isExpr = typeof arg !== "string";
if (isExpr) {
templateCost += 3;
concatenationCost += lastWasExpr ? 1 : 4;
}
lastWasExpr = isExpr;
}
if (lastWasExpr) concatenationCost -= 3;
if (typeof args[0] !== "string" && typeof args[1] === "string")
concatenationCost -= 3;
if (concatenationCost <= templateCost) return this._es5Concatenation(args);
return `\`${args
.map(arg => (typeof arg === "string" ? arg : `\${${arg.expr}}`))
.join("")}\``;
}
/**
* @param {Array<string|{expr: string}>} args args (len >= 2)
* @returns {string} result expression
* @private
*/
_es5Concatenation(args) {
const str = args
.map(arg => (typeof arg === "string" ? JSON.stringify(arg) : arg.expr))
.join(" + ");
// when the first two args are expression, we need to prepend "" + to force string
// concatenation instead of number addition.
return typeof args[0] !== "string" && typeof args[1] !== "string"
? `"" + ${str}`
: str;
}
/**
* @param {string} expression expression
* @param {string} args arguments
* @returns {string} expression function code
*/
expressionFunction(expression, args = "") {
return this.supportsArrowFunction()
? `(${args}) => (${expression})`
: `function(${args}) { ${expression}; }`;
}
/**
* @returns {string} empty function code
*/
emptyFunction() {
return this.supportsArrowFunction() ? "x => {}" : "function() {}";
}
/**
* @param {string[]} items items
* @param {string} value value
* @returns {string} destructure array code
*/
destructureArray(items, value) {
return this.supportsDestructuring()
? `var [${items.join(", ")}] = ${value};`
: Template.asString(
items.map((item, i) => `var ${item} = ${value}[${i}];`)
);
}
/**
* @param {string[]} items items
* @param {string} value value
* @returns {string} destructure object code
*/
destructureObject(items, value) {
return this.supportsDestructuring()
? `var {${items.join(", ")}} = ${value};`
: Template.asString(
items.map(item => `var ${item} = ${value}${propertyAccess([item])};`)
);
}
/**
* @param {string} args arguments
* @param {string} body body
* @returns {string} IIFE code
*/
iife(args, body) {
return `(${this.basicFunction(args, body)})()`;
}
/**
* @param {string} variable variable
* @param {string} array array
* @param {string | string[]} body body
* @returns {string} for each code
*/
forEach(variable, array, body) {
return this.supportsForOf()
? `for(const ${variable} of ${array}) {\n${Template.indent(body)}\n}`
: `${array}.forEach(function(${variable}) {\n${Template.indent(
body
)}\n});`;
}
/**
* Add a comment
* @param {object} options Information content of the comment
* @param {string=} options.request request string used originally
* @param {string=} options.chunkName name of the chunk referenced
* @param {string=} options.chunkReason reason information of the chunk
* @param {string=} options.message additional message
* @param {string=} options.exportName name of the export
* @returns {string} comment
*/
comment({ request, chunkName, chunkReason, message, exportName }) {
let content;
if (this.outputOptions.pathinfo) {
content = [message, request, chunkName, chunkReason]
.filter(Boolean)
.map(item => this.requestShortener.shorten(item))
.join(" | ");
} else {
content = [message, chunkName, chunkReason]
.filter(Boolean)
.map(item => this.requestShortener.shorten(item))
.join(" | ");
}
if (!content) return "";
if (this.outputOptions.pathinfo) {
return Template.toComment(content) + " ";
} else {
return Template.toNormalComment(content) + " ";
}
}
/**
* @param {object} options generation options
* @param {string=} options.request request string used originally
* @returns {string} generated error block
*/
throwMissingModuleErrorBlock({ request }) {
const err = `Cannot find module '${request}'`;
return `var e = new Error(${JSON.stringify(
err
)}); e.code = 'MODULE_NOT_FOUND'; throw e;`;
}
/**
* @param {object} options generation options
* @param {string=} options.request request string used originally
* @returns {string} generated error function
*/
throwMissingModuleErrorFunction({ request }) {
return `function webpackMissingModule() { ${this.throwMissingModuleErrorBlock(
{ request }
)} }`;
}
/**
* @param {object} options generation options
* @param {string=} options.request request string used originally
* @returns {string} generated error IIFE
*/
missingModule({ request }) {
return `Object(${this.throwMissingModuleErrorFunction({ request })}())`;
}
/**
* @param {object} options generation options
* @param {string=} options.request request string used originally
* @returns {string} generated error statement
*/
missingModuleStatement({ request }) {
return `${this.missingModule({ request })};\n`;
}
/**
* @param {object} options generation options
* @param {string=} options.request request string used originally
* @returns {string} generated error code
*/
missingModulePromise({ request }) {
return `Promise.resolve().then(${this.throwMissingModuleErrorFunction({
request
})})`;
}
/**
* @param {Object} options options object
* @param {ChunkGraph} options.chunkGraph the chunk graph
* @param {Module} options.module the module
* @param {string=} options.request the request that should be printed as comment
* @param {string=} options.idExpr expression to use as id expression
* @param {"expression" | "promise" | "statements"} options.type which kind of code should be returned
* @returns {string} the code
*/
weakError({ module, chunkGraph, request, idExpr, type }) {
const moduleId = chunkGraph.getModuleId(module);
const errorMessage =
moduleId === null
? JSON.stringify("Module is not available (weak dependency)")
: idExpr
? `"Module '" + ${idExpr} + "' is not available (weak dependency)"`
: JSON.stringify(
`Module '${moduleId}' is not available (weak dependency)`
);
const comment = request ? Template.toNormalComment(request) + " " : "";
const errorStatements =
`var e = new Error(${errorMessage}); ` +
comment +
"e.code = 'MODULE_NOT_FOUND'; throw e;";
switch (type) {
case "statements":
return errorStatements;
case "promise":
return `Promise.resolve().then(${this.basicFunction(
"",
errorStatements
)})`;
case "expression":
return this.iife("", errorStatements);
}
}
/**
* @param {Object} options options object
* @param {Module} options.module the module
* @param {ChunkGraph} options.chunkGraph the chunk graph
* @param {string=} options.request the request that should be printed as comment
* @param {boolean=} options.weak if the dependency is weak (will create a nice error message)
* @returns {string} the expression
*/
moduleId({ module, chunkGraph, request, weak }) {
if (!module) {
return this.missingModule({
request
});
}
const moduleId = chunkGraph.getModuleId(module);
if (moduleId === null) {
if (weak) {
return "null /* weak dependency, without id */";
}
throw new Error(
`RuntimeTemplate.moduleId(): ${noModuleIdErrorMessage(
module,
chunkGraph
)}`
);
}
return `${this.comment({ request })}${JSON.stringify(moduleId)}`;
}
/**
* @param {Object} options options object
* @param {Module | null} options.module the module
* @param {ChunkGraph} options.chunkGraph the chunk graph
* @param {string=} options.request the request that should be printed as comment
* @param {boolean=} options.weak if the dependency is weak (will create a nice error message)
* @param {RuntimeRequirements} options.runtimeRequirements if set, will be filled with runtime requirements
* @returns {string} the expression
*/
moduleRaw({ module, chunkGraph, request, weak, runtimeRequirements }) {
if (!module) {
return this.missingModule({
request
});
}
const moduleId = chunkGraph.getModuleId(module);
if (moduleId === null) {
if (weak) {
// only weak referenced modules don't get an id
// we can always emit an error emitting code here
return this.weakError({
module,
chunkGraph,
request,
type: "expression"
});
}
throw new Error(
`RuntimeTemplate.moduleId(): ${noModuleIdErrorMessage(
module,
chunkGraph
)}`
);
}
runtimeRequirements.add(RuntimeGlobals.require);
return `${RuntimeGlobals.require}(${this.moduleId({
module,
chunkGraph,
request,
weak
})})`;
}
/**
* @param {Object} options options object
* @param {Module | null} options.module the module
* @param {ChunkGraph} options.chunkGraph the chunk graph
* @param {string} options.request the request that should be printed as comment
* @param {boolean=} options.weak if the dependency is weak (will create a nice error message)
* @param {RuntimeRequirements} options.runtimeRequirements if set, will be filled with runtime requirements
* @returns {string} the expression
*/
moduleExports({ module, chunkGraph, request, weak, runtimeRequirements }) {
return this.moduleRaw({
module,
chunkGraph,
request,
weak,
runtimeRequirements
});
}
/**
* @param {Object} options options object
* @param {Module} options.module the module
* @param {ChunkGraph} options.chunkGraph the chunk graph
* @param {string} options.request the request that should be printed as comment
* @param {boolean=} options.strict if the current module is in strict esm mode
* @param {boolean=} options.weak if the dependency is weak (will create a nice error message)
* @param {RuntimeRequirements} options.runtimeRequirements if set, will be filled with runtime requirements
* @returns {string} the expression
*/
moduleNamespace({
module,
chunkGraph,
request,
strict,
weak,
runtimeRequirements
}) {
if (!module) {
return this.missingModule({
request
});
}
if (chunkGraph.getModuleId(module) === null) {
if (weak) {
// only weak referenced modules don't get an id
// we can always emit an error emitting code here
return this.weakError({
module,
chunkGraph,
request,
type: "expression"
});
}
throw new Error(
`RuntimeTemplate.moduleNamespace(): ${noModuleIdErrorMessage(
module,
chunkGraph
)}`
);
}
const moduleId = this.moduleId({
module,
chunkGraph,
request,
weak
});
const exportsType = module.getExportsType(chunkGraph.moduleGraph, strict);
switch (exportsType) {
case "namespace":
return this.moduleRaw({
module,
chunkGraph,
request,
weak,
runtimeRequirements
});
case "default-with-named":
runtimeRequirements.add(RuntimeGlobals.createFakeNamespaceObject);
return `${RuntimeGlobals.createFakeNamespaceObject}(${moduleId}, 3)`;
case "default-only":
runtimeRequirements.add(RuntimeGlobals.createFakeNamespaceObject);
return `${RuntimeGlobals.createFakeNamespaceObject}(${moduleId}, 1)`;
case "dynamic":
runtimeRequirements.add(RuntimeGlobals.createFakeNamespaceObject);
return `${RuntimeGlobals.createFakeNamespaceObject}(${moduleId}, 7)`;
}
}
/**
* @param {Object} options options object
* @param {ChunkGraph} options.chunkGraph the chunk graph
* @param {AsyncDependenciesBlock=} options.block the current dependencies block
* @param {Module} options.module the module
* @param {string} options.request the request that should be printed as comment
* @param {string} options.message a message for the comment
* @param {boolean=} options.strict if the current module is in strict esm mode
* @param {boolean=} options.weak if the dependency is weak (will create a nice error message)
* @param {RuntimeRequirements} options.runtimeRequirements if set, will be filled with runtime requirements
* @returns {string} the promise expression
*/
moduleNamespacePromise({
chunkGraph,
block,
module,
request,
message,
strict,
weak,
runtimeRequirements
}) {
if (!module) {
return this.missingModulePromise({
request
});
}
const moduleId = chunkGraph.getModuleId(module);
if (moduleId === null) {
if (weak) {
// only weak referenced modules don't get an id
// we can always emit an error emitting code here
return this.weakError({
module,
chunkGraph,
request,
type: "promise"
});
}
throw new Error(
`RuntimeTemplate.moduleNamespacePromise(): ${noModuleIdErrorMessage(
module,
chunkGraph
)}`
);
}
const promise = this.blockPromise({
chunkGraph,
block,
message,
runtimeRequirements
});
let appending;
let idExpr = JSON.stringify(chunkGraph.getModuleId(module));
const comment = this.comment({
request
});
let header = "";
if (weak) {
if (idExpr.length > 8) {
// 'var x="nnnnnn";x,"+x+",x' vs '"nnnnnn",nnnnnn,"nnnnnn"'
header += `var id = ${idExpr}; `;
idExpr = "id";
}
runtimeRequirements.add(RuntimeGlobals.moduleFactories);
header += `if(!${
RuntimeGlobals.moduleFactories
}[${idExpr}]) { ${this.weakError({
module,
chunkGraph,
request,
idExpr,
type: "statements"
})} } `;
}
const moduleIdExpr = this.moduleId({
module,
chunkGraph,
request,
weak
});
const exportsType = module.getExportsType(chunkGraph.moduleGraph, strict);
let fakeType = 16;
switch (exportsType) {
case "namespace":
if (header) {
const rawModule = this.moduleRaw({
module,
chunkGraph,
request,
weak,
runtimeRequirements
});
appending = `.then(${this.basicFunction(
"",
`${header}return ${rawModule};`
)})`;
} else {
runtimeRequirements.add(RuntimeGlobals.require);
appending = `.then(${RuntimeGlobals.require}.bind(${RuntimeGlobals.require}, ${comment}${idExpr}))`;
}
break;
case "dynamic":
fakeType |= 4;
/* fall through */
case "default-with-named":
fakeType |= 2;
/* fall through */
case "default-only":
runtimeRequirements.add(RuntimeGlobals.createFakeNamespaceObject);
if (chunkGraph.moduleGraph.isAsync(module)) {
if (header) {
const rawModule = this.moduleRaw({
module,
chunkGraph,
request,
weak,
runtimeRequirements
});
appending = `.then(${this.basicFunction(
"",
`${header}return ${rawModule};`
)})`;
} else {
runtimeRequirements.add(RuntimeGlobals.require);
appending = `.then(${RuntimeGlobals.require}.bind(${RuntimeGlobals.require}, ${comment}${idExpr}))`;
}
appending += `.then(${this.returningFunction(
`${RuntimeGlobals.createFakeNamespaceObject}(m, ${fakeType})`,
"m"
)})`;
} else {
fakeType |= 1;
if (header) {
const returnExpression = `${RuntimeGlobals.createFakeNamespaceObject}(${moduleIdExpr}, ${fakeType})`;
appending = `.then(${this.basicFunction(
"",
`${header}return ${returnExpression};`
)})`;
} else {
appending = `.then(${RuntimeGlobals.createFakeNamespaceObject}.bind(${RuntimeGlobals.require}, ${comment}${idExpr}, ${fakeType}))`;
}
}
break;
}
return `${promise || "Promise.resolve()"}${appending}`;
}
/**
* @param {Object} options options object
* @param {ChunkGraph} options.chunkGraph the chunk graph
* @param {RuntimeSpec=} options.runtime runtime for which this code will be generated
* @param {RuntimeSpec | boolean=} options.runtimeCondition only execute the statement in some runtimes
* @param {RuntimeRequirements} options.runtimeRequirements if set, will be filled with runtime requirements
* @returns {string} expression
*/
runtimeConditionExpression({
chunkGraph,
runtimeCondition,
runtime,
runtimeRequirements
}) {
if (runtimeCondition === undefined) return "true";
if (typeof runtimeCondition === "boolean") return `${runtimeCondition}`;
/** @type {Set<string>} */
const positiveRuntimeIds = new Set();
forEachRuntime(runtimeCondition, runtime =>
positiveRuntimeIds.add(
`${chunkGraph.getRuntimeId(/** @type {string} */ (runtime))}`
)
);
/** @type {Set<string>} */
const negativeRuntimeIds = new Set();
forEachRuntime(subtractRuntime(runtime, runtimeCondition), runtime =>
negativeRuntimeIds.add(
`${chunkGraph.getRuntimeId(/** @type {string} */ (runtime))}`
)
);
runtimeRequirements.add(RuntimeGlobals.runtimeId);
return compileBooleanMatcher.fromLists(
Array.from(positiveRuntimeIds),
Array.from(negativeRuntimeIds)
)(RuntimeGlobals.runtimeId);
}
/**
*
* @param {Object} options options object
* @param {boolean=} options.update whether a new variable should be created or the existing one updated
* @param {Module} options.module the module
* @param {ChunkGraph} options.chunkGraph the chunk graph
* @param {string} options.request the request that should be printed as comment
* @param {string} options.importVar name of the import variable
* @param {Module} options.originModule module in which the statement is emitted
* @param {boolean=} options.weak true, if this is a weak dependency
* @param {RuntimeRequirements} options.runtimeRequirements if set, will be filled with runtime requirements
* @returns {[string, string]} the import statement and the compat statement
*/
importStatement({
update,
module,
chunkGraph,
request,
importVar,
originModule,
weak,
runtimeRequirements
}) {
if (!module) {
return [
this.missingModuleStatement({
request
}),
""
];
}
if (chunkGraph.getModuleId(module) === null) {
if (weak) {
// only weak referenced modules don't get an id
// we can always emit an error emitting code here
return [
this.weakError({
module,
chunkGraph,
request,
type: "statements"
}),
""
];
}
throw new Error(
`RuntimeTemplate.importStatement(): ${noModuleIdErrorMessage(
module,
chunkGraph
)}`
);
}
const moduleId = this.moduleId({
module,
chunkGraph,
request,
weak
});
const optDeclaration = update ? "" : "var ";
const exportsType = module.getExportsType(
chunkGraph.moduleGraph,
/** @type {BuildMeta} */
(originModule.buildMeta).strictHarmonyModule
);
runtimeRequirements.add(RuntimeGlobals.require);
const importContent = `/* harmony import */ ${optDeclaration}${importVar} = ${RuntimeGlobals.require}(${moduleId});\n`;
if (exportsType === "dynamic") {
runtimeRequirements.add(RuntimeGlobals.compatGetDefaultExport);
return [
importContent,
`/* harmony import */ ${optDeclaration}${importVar}_default = /*#__PURE__*/${RuntimeGlobals.compatGetDefaultExport}(${importVar});\n`
];
}
return [importContent, ""];
}
/**
* @param {Object} options options
* @param {ModuleGraph} options.moduleGraph the module graph
* @param {Module} options.module the module
* @param {string} options.request the request
* @param {string | string[]} options.exportName the export name
* @param {Module} options.originModule the origin module
* @param {boolean|undefined} options.asiSafe true, if location is safe for ASI, a bracket can be emitted
* @param {boolean} options.isCall true, if expression will be called
* @param {boolean | null} options.callContext when false, call context will not be preserved
* @param {boolean} options.defaultInterop when true and accessing the default exports, interop code will be generated
* @param {string} options.importVar the identifier name of the import variable
* @param {InitFragment<TODO>[]} options.initFragments init fragments will be added here
* @param {RuntimeSpec} options.runtime runtime for which this code will be generated
* @param {RuntimeRequirements} options.runtimeRequirements if set, will be filled with runtime requirements
* @returns {string} expression
*/
exportFromImport({
moduleGraph,
module,
request,
exportName,
originModule,
asiSafe,
isCall,
callContext,
defaultInterop,
importVar,
initFragments,
runtime,
runtimeRequirements
}) {
if (!module) {
return this.missingModule({
request
});
}
if (!Array.isArray(exportName)) {
exportName = exportName ? [exportName] : [];
}
const exportsType = module.getExportsType(
moduleGraph,
/** @type {BuildMeta} */
(originModule.buildMeta).strictHarmonyModule
);
if (defaultInterop) {
if (exportName.length > 0 && exportName[0] === "default") {
switch (exportsType) {
case "dynamic":
if (isCall) {
return `${importVar}_default()${propertyAccess(exportName, 1)}`;
} else {
return asiSafe
? `(${importVar}_default()${propertyAccess(exportName, 1)})`
: asiSafe === false
? `;(${importVar}_default()${propertyAccess(exportName, 1)})`
: `${importVar}_default.a${propertyAccess(exportName, 1)}`;
}
case "default-only":
case "default-with-named":
exportName = exportName.slice(1);
break;
}
} else if (exportName.length > 0) {
if (exportsType === "default-only") {
return (
"/* non-default import from non-esm module */undefined" +
propertyAccess(exportName, 1)
);
} else if (
exportsType !== "namespace" &&
exportName[0] === "__esModule"
) {
return "/* __esModule */true";
}
} else if (
exportsType === "default-only" ||
exportsType === "default-with-named"
) {
runtimeRequirements.add(RuntimeGlobals.createFakeNamespaceObject);
initFragments.push(
new InitFragment(
`var ${importVar}_namespace_cache;\n`,
InitFragment.STAGE_CONSTANTS,
-1,
`${importVar}_namespace_cache`
)
);
return `/*#__PURE__*/ ${
asiSafe ? "" : asiSafe === false ? ";" : "Object"
}(${importVar}_namespace_cache || (${importVar}_namespace_cache = ${
RuntimeGlobals.createFakeNamespaceObject
}(${importVar}${exportsType === "default-only" ? "" : ", 2"})))`;
}
}
if (exportName.length > 0) {
const exportsInfo = moduleGraph.getExportsInfo(module);
const used = exportsInfo.getUsedName(exportName, runtime);
if (!used) {
const comment = Template.toNormalComment(
`unused export ${propertyAccess(exportName)}`
);
return `${comment} undefined`;
}
const comment = equals(used, exportName)
? ""
: Template.toNormalComment(propertyAccess(exportName)) + " ";
const access = `${importVar}${comment}${propertyAccess(used)}`;
if (isCall && callContext === false) {
return asiSafe
? `(0,${access})`
: asiSafe === false
? `;(0,${access})`
: `/*#__PURE__*/Object(${access})`;
}
return access;
} else {
return importVar;
}
}
/**
* @param {Object} options options
* @param {AsyncDependenciesBlock | undefined} options.block the async block
* @param {string} options.message the message
* @param {ChunkGraph} options.chunkGraph the chunk graph
* @param {RuntimeRequirements} options.runtimeRequirements if set, will be filled with runtime requirements
* @returns {string} expression
*/
blockPromise({ block, message, chunkGraph, runtimeRequirements }) {
if (!block) {
const comment = this.comment({
message
});
return `Promise.resolve(${comment.trim()})`;
}
const chunkGroup = chunkGraph.getBlockChunkGroup(block);
if (!chunkGroup || chunkGroup.chunks.length === 0) {
const comment = this.comment({
message
});
return `Promise.resolve(${comment.trim()})`;
}
const chunks = chunkGroup.chunks.filter(
chunk => !chunk.hasRuntime() && chunk.id !== null
);
const comment = this.comment({
message,
chunkName: block.chunkName
});
if (chunks.length === 1) {
const chunkId = JSON.stringify(chunks[0].id);
runtimeRequirements.add(RuntimeGlobals.ensureChunk);
const fetchPriority = chunkGroup.options.fetchPriority;
if (fetchPriority) {
runtimeRequirements.add(RuntimeGlobals.hasFetchPriority);
}
return `${RuntimeGlobals.ensureChunk}(${comment}${chunkId}${
fetchPriority ? `, ${JSON.stringify(fetchPriority)}` : ""
})`;
} else if (chunks.length > 0) {
runtimeRequirements.add(RuntimeGlobals.ensureChunk);
const fetchPriority = chunkGroup.options.fetchPriority;
if (fetchPriority) {
runtimeRequirements.add(RuntimeGlobals.hasFetchPriority);
}
/**
* @param {Chunk} chunk chunk
* @returns {string} require chunk id code
*/
const requireChunkId = chunk =>
`${RuntimeGlobals.ensureChunk}(${JSON.stringify(chunk.id)}${
fetchPriority ? `, ${JSON.stringify(fetchPriority)}` : ""
})`;
return `Promise.all(${comment.trim()}[${chunks
.map(requireChunkId)
.join(", ")}])`;
} else {
return `Promise.resolve(${comment.trim()})`;
}
}
/**
* @param {Object} options options
* @param {AsyncDependenciesBlock} options.block the async block
* @param {ChunkGraph} options.chunkGraph the chunk graph
* @param {RuntimeRequirements} options.runtimeRequirements if set, will be filled with runtime requirements
* @param {string=} options.request request string used originally
* @returns {string} expression
*/
asyncModuleFactory({ block, chunkGraph, runtimeRequirements, request }) {
const dep = block.dependencies[0];
const module = chunkGraph.moduleGraph.getModule(dep);
const ensureChunk = this.blockPromise({
block,
message: "",
chunkGraph,
runtimeRequirements
});
const factory = this.returningFunction(
this.moduleRaw({
module,
chunkGraph,
request,
runtimeRequirements
})
);
return this.returningFunction(
ensureChunk.startsWith("Promise.resolve(")
? `${factory}`
: `${ensureChunk}.then(${this.returningFunction(factory)})`
);
}
/**
* @param {Object} options options
* @param {Dependency} options.dependency the dependency
* @param {ChunkGraph} options.chunkGraph the chunk graph
* @param {RuntimeRequirements} options.runtimeRequirements if set, will be filled with runtime requirements
* @param {string=} options.request request string used originally
* @returns {string} expression
*/
syncModuleFactory({ dependency, chunkGraph, runtimeRequirements, request }) {
const module = chunkGraph.moduleGraph.getModule(dependency);
const factory = this.returningFunction(
this.moduleRaw({
module,
chunkGraph,
request,
runtimeRequirements
})
);
return this.returningFunction(factory);
}
/**
* @param {Object} options options
* @param {string} options.exportsArgument the name of the exports object
* @param {RuntimeRequirements} options.runtimeRequirements if set, will be filled with runtime requirements
* @returns {string} statement
*/
defineEsModuleFlagStatement({ exportsArgument, runtimeRequirements }) {
runtimeRequirements.add(RuntimeGlobals.makeNamespaceObject);
runtimeRequirements.add(RuntimeGlobals.exports);
return `${RuntimeGlobals.makeNamespaceObject}(${exportsArgument});\n`;
}
/**
* @param {Object} options options object
* @param {Module} options.module the module
* @param {string} options.publicPath the public path
* @param {RuntimeSpec=} options.runtime runtime
* @param {CodeGenerationResults} options.codeGenerationResults the code generation results
* @returns {string} the url of the asset
*/
assetUrl({ publicPath, runtime, module, codeGenerationResults }) {
if (!module) {
return "data:,";
}
const codeGen = codeGenerationResults.get(module, runtime);
const data = /** @type {NonNullable<CodeGenerationResult["data"]>} */ (
codeGen.data
);
const url = data.get("url");
if (url) return url.toString();
const filename = data.get("filename");
return publicPath + filename;
}
}
module.exports = RuntimeTemplate;