99 lines
3.0 KiB
JavaScript
99 lines
3.0 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.ESMOutputFormat = void 0;
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class ESMOutputFormat {
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constructor(packager) {
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this.packager = packager;
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}
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buildBundlePrelude() {
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let res = '';
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let lines = 0;
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for (let [source, specifiers] of this.packager.externals) {
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let defaultSpecifier = null;
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let namespaceSpecifier = null;
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let namedSpecifiers = [];
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for (let [imported, symbol] of specifiers) {
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if (imported === 'default' /* || isCommonJS*/) {
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defaultSpecifier = symbol;
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} else if (imported === '*') {
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namespaceSpecifier = `* as ${symbol}`;
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} else {
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let specifier = imported;
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if (symbol !== imported) {
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specifier += ` as ${symbol}`;
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}
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namedSpecifiers.push(specifier);
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}
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}
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// ESModule syntax allows combining default and namespace specifiers, or default and named, but not all three.
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let imported = '';
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if (namespaceSpecifier) {
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let s = namespaceSpecifier;
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if (defaultSpecifier) {
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s = `${defaultSpecifier}, ${namespaceSpecifier}`;
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}
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res += `import ${s} from ${JSON.stringify(source)};\n`;
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lines++;
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} else if (defaultSpecifier) {
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imported = defaultSpecifier;
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if (namedSpecifiers.length > 0) {
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imported += `, {${namedSpecifiers.join(', ')}}`;
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}
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} else if (namedSpecifiers.length > 0) {
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imported = `{${namedSpecifiers.join(', ')}}`;
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}
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if (imported.length > 0) {
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res += `import ${imported} from ${JSON.stringify(source)};\n`;
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lines++;
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} else if (!namespaceSpecifier) {
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res += `import ${JSON.stringify(source)};\n`;
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lines++;
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}
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}
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if (res.length > 0) {
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res += '\n';
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lines++;
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}
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return [res, lines];
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}
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buildBundlePostlude() {
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let res = '';
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let lines = 0;
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let exportSpecifiers = [];
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for (let {
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asset,
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exportSymbol,
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local,
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exportAs
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} of this.packager.exportedSymbols.values()) {
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if (this.packager.wrappedAssets.has(asset.id)) {
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let obj = `parcelRequire("${this.packager.bundleGraph.getAssetPublicId(asset)}")`;
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res += `\nvar ${local} = ${this.packager.getPropertyAccess(obj, exportSymbol)};`;
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lines++;
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}
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for (let as of exportAs) {
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let specifier = local;
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if (exportAs !== local) {
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specifier += ` as ${as}`;
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}
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exportSpecifiers.push(specifier);
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}
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}
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if (exportSpecifiers.length > 0) {
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res += `\nexport {${exportSpecifiers.join(', ')}};`;
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lines++;
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}
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if (this.packager.needsPrelude && this.packager.shouldBundleQueue(this.packager.bundle)) {
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// Should be last thing the bundle executes on intial eval
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res += `\n$parcel$global.rlb(${JSON.stringify(this.packager.bundle.publicId)})`;
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lines++;
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}
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return [res, lines];
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}
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}
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exports.ESMOutputFormat = ESMOutputFormat; |