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import-builder.js
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Tue, Nov 19, 18:26

import-builder.js
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"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = void 0;
var _assert = _interopRequireDefault(require("assert"));
var t = _interopRequireWildcard(require("@babel/types"));
function _getRequireWildcardCache() { if (typeof WeakMap !== "function") return null; var cache = new WeakMap(); _getRequireWildcardCache = function () { return cache; }; return cache; }
function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
class ImportBuilder {
constructor(importedSource, scope, hub) {
this._statements = [];
this._resultName = null;
this._scope = null;
this._hub = null;
this._scope = scope;
this._hub = hub;
this._importedSource = importedSource;
}
done() {
return {
statements: this._statements,
resultName: this._resultName
};
}
import() {
this._statements.push(t.importDeclaration([], t.stringLiteral(this._importedSource)));
return this;
}
require() {
this._statements.push(t.expressionStatement(t.callExpression(t.identifier("require"), [t.stringLiteral(this._importedSource)])));
return this;
}
namespace(name = "namespace") {
name = this._scope.generateUidIdentifier(name);
const statement = this._statements[this._statements.length - 1];
(0, _assert.default)(statement.type === "ImportDeclaration");
(0, _assert.default)(statement.specifiers.length === 0);
statement.specifiers = [t.importNamespaceSpecifier(name)];
this._resultName = t.cloneNode(name);
return this;
}
default(name) {
name = this._scope.generateUidIdentifier(name);
const statement = this._statements[this._statements.length - 1];
(0, _assert.default)(statement.type === "ImportDeclaration");
(0, _assert.default)(statement.specifiers.length === 0);
statement.specifiers = [t.importDefaultSpecifier(name)];
this._resultName = t.cloneNode(name);
return this;
}
named(name, importName) {
if (importName === "default") return this.default(name);
name = this._scope.generateUidIdentifier(name);
const statement = this._statements[this._statements.length - 1];
(0, _assert.default)(statement.type === "ImportDeclaration");
(0, _assert.default)(statement.specifiers.length === 0);
statement.specifiers = [t.importSpecifier(name, t.identifier(importName))];
this._resultName = t.cloneNode(name);
return this;
}
var(name) {
name = this._scope.generateUidIdentifier(name);
let statement = this._statements[this._statements.length - 1];
if (statement.type !== "ExpressionStatement") {
(0, _assert.default)(this._resultName);
statement = t.expressionStatement(this._resultName);
this._statements.push(statement);
}
this._statements[this._statements.length - 1] = t.variableDeclaration("var", [t.variableDeclarator(name, statement.expression)]);
this._resultName = t.cloneNode(name);
return this;
}
defaultInterop() {
return this._interop(this._hub.addHelper("interopRequireDefault"));
}
wildcardInterop() {
return this._interop(this._hub.addHelper("interopRequireWildcard"));
}
_interop(callee) {
const statement = this._statements[this._statements.length - 1];
if (statement.type === "ExpressionStatement") {
statement.expression = t.callExpression(callee, [statement.expression]);
} else if (statement.type === "VariableDeclaration") {
(0, _assert.default)(statement.declarations.length === 1);
statement.declarations[0].init = t.callExpression(callee, [statement.declarations[0].init]);
} else {
_assert.default.fail("Unexpected type.");
}
return this;
}
prop(name) {
const statement = this._statements[this._statements.length - 1];
if (statement.type === "ExpressionStatement") {
statement.expression = t.memberExpression(statement.expression, t.identifier(name));
} else if (statement.type === "VariableDeclaration") {
(0, _assert.default)(statement.declarations.length === 1);
statement.declarations[0].init = t.memberExpression(statement.declarations[0].init, t.identifier(name));
} else {
_assert.default.fail("Unexpected type:" + statement.type);
}
return this;
}
read(name) {
this._resultName = t.memberExpression(this._resultName, t.identifier(name));
}
}
exports.default = ImportBuilder;

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