vue hello world项目
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/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
"use strict";
const InnerGraph = require("../optimize/InnerGraph");
const ConstDependency = require("./ConstDependency");
const HarmonyExportExpressionDependency = require("./HarmonyExportExpressionDependency");
const HarmonyExportHeaderDependency = require("./HarmonyExportHeaderDependency");
const HarmonyExportImportedSpecifierDependency = require("./HarmonyExportImportedSpecifierDependency");
const HarmonyExportSpecifierDependency = require("./HarmonyExportSpecifierDependency");
const { ExportPresenceModes } = require("./HarmonyImportDependency");
const {
harmonySpecifierTag,
getAssertions
} = require("./HarmonyImportDependencyParserPlugin");
const HarmonyImportSideEffectDependency = require("./HarmonyImportSideEffectDependency");
const { HarmonyStarExportsList } = HarmonyExportImportedSpecifierDependency;
module.exports = class HarmonyExportDependencyParserPlugin {
constructor(options) {
this.exportPresenceMode =
options.reexportExportsPresence !== undefined
? ExportPresenceModes.fromUserOption(options.reexportExportsPresence)
: options.exportsPresence !== undefined
? ExportPresenceModes.fromUserOption(options.exportsPresence)
: options.strictExportPresence
? ExportPresenceModes.ERROR
: ExportPresenceModes.AUTO;
}
apply(parser) {
const { exportPresenceMode } = this;
parser.hooks.export.tap(
"HarmonyExportDependencyParserPlugin",
statement => {
const dep = new HarmonyExportHeaderDependency(
statement.declaration && statement.declaration.range,
statement.range
);
dep.loc = Object.create(statement.loc);
dep.loc.index = -1;
parser.state.module.addPresentationalDependency(dep);
return true;
}
);
parser.hooks.exportImport.tap(
"HarmonyExportDependencyParserPlugin",
(statement, source) => {
parser.state.lastHarmonyImportOrder =
(parser.state.lastHarmonyImportOrder || 0) + 1;
const clearDep = new ConstDependency("", statement.range);
clearDep.loc = Object.create(statement.loc);
clearDep.loc.index = -1;
parser.state.module.addPresentationalDependency(clearDep);
const sideEffectDep = new HarmonyImportSideEffectDependency(
source,
parser.state.lastHarmonyImportOrder,
getAssertions(statement)
);
sideEffectDep.loc = Object.create(statement.loc);
sideEffectDep.loc.index = -1;
parser.state.current.addDependency(sideEffectDep);
return true;
}
);
parser.hooks.exportExpression.tap(
"HarmonyExportDependencyParserPlugin",
(statement, expr) => {
const isFunctionDeclaration = expr.type === "FunctionDeclaration";
const comments = parser.getComments([
statement.range[0],
expr.range[0]
]);
const dep = new HarmonyExportExpressionDependency(
expr.range,
statement.range,
comments
.map(c => {
switch (c.type) {
case "Block":
return `/*${c.value}*/`;
case "Line":
return `//${c.value}\n`;
}
return "";
})
.join(""),
expr.type.endsWith("Declaration") && expr.id
? expr.id.name
: isFunctionDeclaration
? {
id: expr.id ? expr.id.name : undefined,
range: [
expr.range[0],
expr.params.length > 0
? expr.params[0].range[0]
: expr.body.range[0]
],
prefix: `${expr.async ? "async " : ""}function${
expr.generator ? "*" : ""
} `,
suffix: `(${expr.params.length > 0 ? "" : ") "}`
}
: undefined
);
dep.loc = Object.create(statement.loc);
dep.loc.index = -1;
parser.state.current.addDependency(dep);
InnerGraph.addVariableUsage(
parser,
expr.type.endsWith("Declaration") && expr.id
? expr.id.name
: "*default*",
"default"
);
return true;
}
);
parser.hooks.exportSpecifier.tap(
"HarmonyExportDependencyParserPlugin",
(statement, id, name, idx) => {
const settings = parser.getTagData(id, harmonySpecifierTag);
let dep;
const harmonyNamedExports = (parser.state.harmonyNamedExports =
parser.state.harmonyNamedExports || new Set());
harmonyNamedExports.add(name);
InnerGraph.addVariableUsage(parser, id, name);
if (settings) {
dep = new HarmonyExportImportedSpecifierDependency(
settings.source,
settings.sourceOrder,
settings.ids,
name,
harmonyNamedExports,
null,
exportPresenceMode,
null,
settings.assertions
);
} else {
dep = new HarmonyExportSpecifierDependency(id, name);
}
dep.loc = Object.create(statement.loc);
dep.loc.index = idx;
parser.state.current.addDependency(dep);
return true;
}
);
parser.hooks.exportImportSpecifier.tap(
"HarmonyExportDependencyParserPlugin",
(statement, source, id, name, idx) => {
const harmonyNamedExports = (parser.state.harmonyNamedExports =
parser.state.harmonyNamedExports || new Set());
let harmonyStarExports = null;
if (name) {
harmonyNamedExports.add(name);
} else {
harmonyStarExports = parser.state.harmonyStarExports =
parser.state.harmonyStarExports || new HarmonyStarExportsList();
}
const dep = new HarmonyExportImportedSpecifierDependency(
source,
parser.state.lastHarmonyImportOrder,
id ? [id] : [],
name,
harmonyNamedExports,
harmonyStarExports && harmonyStarExports.slice(),
exportPresenceMode,
harmonyStarExports
);
if (harmonyStarExports) {
harmonyStarExports.push(dep);
}
dep.loc = Object.create(statement.loc);
dep.loc.index = idx;
parser.state.current.addDependency(dep);
return true;
}
);
}
};