mirror of https://github.com/webpack/webpack.git
80 lines
2.4 KiB
JavaScript
80 lines
2.4 KiB
JavaScript
/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Tobias Koppers @sokra
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*/
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var HarmonyModulesHelpers = exports;
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HarmonyModulesHelpers.getModuleVar = function(state, request) {
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if(!state.harmonyModules) state.harmonyModules = [];
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var idx = state.harmonyModules.indexOf(request);
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if(idx < 0) {
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idx = state.harmonyModules.length;
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state.harmonyModules.push(request);
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}
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return "__WEBPACK_IMPORTED_MODULE_" + idx + "_" + request.replace(/[^A-Za-z0-9_]/g, "_").replace(/__+/g, "_") + "__";
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};
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HarmonyModulesHelpers.getNewModuleVar = function(state, request) {
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if(state.harmonyModules && state.harmonyModules.indexOf(request) >= 0)
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return null;
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return HarmonyModulesHelpers.getModuleVar(state, request);
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};
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HarmonyModulesHelpers.checkModuleVar = function(state, request) {
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if(!state.harmonyModules || state.harmonyModules.indexOf(request) < 0)
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return null;
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return HarmonyModulesHelpers.getModuleVar(state, request);
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};
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// checks if an harmory dependency is active in a module according to
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// precedence rules.
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HarmonyModulesHelpers.isActive = function(module, depInQuestion) {
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var desc = depInQuestion.describeHarmonyExport();
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if(!desc.exportedName) return true;
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var before = true;
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for(var i = 0; i < module.dependencies.length; i++) {
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var dep = module.dependencies[i];
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if(dep === depInQuestion) {
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before = false;
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continue;
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}
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if(!dep.describeHarmonyExport) continue;
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var d = dep.describeHarmonyExport();
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if(!d || !d.exportedName) continue;
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if(d.exportedName === desc.exportedName) {
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if(d.precedence < desc.precedence) {
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return false;
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}
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if(d.precedence === desc.precedence && !before) {
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return false;
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}
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}
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}
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return true;
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};
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// get a list of named exports defined in a module
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// doesn't include * reexports.
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HarmonyModulesHelpers.getActiveExports = function(module) {
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return module.dependencies.reduce(function(arr, dep) {
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if(!dep.describeHarmonyExport) return arr;
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var d = dep.describeHarmonyExport();
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if(!d) return arr;
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var name = d.exportedName;
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if(!name || arr.indexOf(name) >= 0) return arr;
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arr.push(name);
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return arr;
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}, [])
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};
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HarmonyModulesHelpers.isExportedByHarmony = function(module, exportedName) {
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return module.dependencies.some(function(dep) {
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if(!dep.describeHarmonyExport) return false;
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var d = dep.describeHarmonyExport();
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if(!d) return false;
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var name = d.exportedName;
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if(!name) return true; // namespace export
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return name === exportedName; // direct export
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}, [])
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};
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