61 lines
1.9 KiB
JavaScript
61 lines
1.9 KiB
JavaScript
module.exports = CommonJSFormatter;
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var CommonJSStrictFormatter = require("./common-strict");
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var util = require("../../util");
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var t = require("../../types");
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var _ = require("lodash");
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function CommonJSFormatter(file) {
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CommonJSStrictFormatter.apply(this, arguments);
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var hasNonDefaultExports = false;
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_.each(file.ast.program.body, function (node) {
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if (t.isExportDeclaration(node) && !node.default) hasNonDefaultExports = true;
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});
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this.hasNonDefaultExports = hasNonDefaultExports;
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}
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util.inherits(CommonJSFormatter, CommonJSStrictFormatter);
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CommonJSFormatter.prototype.importSpecifier = function (specifier, node, nodes) {
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var variableName = t.getSpecifierName(specifier);
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// import foo from "foo";
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if (t.isIdentifier(specifier.id) && specifier.id.name === "default") {
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nodes.push(t.variableDeclaration("var", [
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t.variableDeclarator(variableName,
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t.callExpression(this.file.addDeclaration("interop-require"), [util.template("require", {
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MODULE_NAME: node.source.raw
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})])
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)
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]));
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} else {
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CommonJSStrictFormatter.prototype.importSpecifier.apply(this, arguments);
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}
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};
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CommonJSFormatter.prototype.export = function (node, nodes) {
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if (node.default) {
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var declar = node.declaration;
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// module.exports = VALUE;
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var templateName = "exports-default-module";
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// exports = module.exports = VALUE;
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if (this.hasNonDefaultExports) templateName = "exports-default-module-override"
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var assign = util.template(templateName, {
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VALUE: this._pushStatement(declar, nodes)
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}, true);
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// hoist to the top if this default is a function
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nodes.push(this._hoistExport(declar, assign));
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} else {
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CommonJSStrictFormatter.prototype.export.apply(this, arguments);
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}
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};
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CommonJSFormatter.prototype.exportSpecifier = function () {
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CommonJSStrictFormatter.prototype.exportSpecifier.apply(this, arguments);
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};
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