source: trip-planner-front/node_modules/@angular/compiler/esm2015/src/output/js_emitter.js@ e29cc2e

/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
import { EmitterVisitorContext } from './abstract_emitter';
import { AbstractJsEmitterVisitor } from './abstract_js_emitter';
import * as o from './output_ast';
export class JavaScriptEmitter {
    emitStatements(genFilePath, stmts, preamble = '') {
        const converter = new JsEmitterVisitor();
        const ctx = EmitterVisitorContext.createRoot();
        converter.visitAllStatements(stmts, ctx);
        const preambleLines = preamble ? preamble.split('\n') : [];
        converter.importsWithPrefixes.forEach((prefix, importedModuleName) => {
            // Note: can't write the real word for import as it screws up system.js auto detection...
            preambleLines.push(`var ${prefix} = req` +
                `uire('${importedModuleName}');`);
        });
        const sm = ctx.toSourceMapGenerator(genFilePath, preambleLines.length).toJsComment();
        const lines = [...preambleLines, ctx.toSource(), sm];
        if (sm) {
            // always add a newline at the end, as some tools have bugs without it.
            lines.push('');
        }
        return lines.join('\n');
    }
}
class JsEmitterVisitor extends AbstractJsEmitterVisitor {
    constructor() {
        super(...arguments);
        this.importsWithPrefixes = new Map();
    }
    visitExternalExpr(ast, ctx) {
        const { name, moduleName } = ast.value;
        if (moduleName) {
            let prefix = this.importsWithPrefixes.get(moduleName);
            if (prefix == null) {
                prefix = `i${this.importsWithPrefixes.size}`;
                this.importsWithPrefixes.set(moduleName, prefix);
            }
            ctx.print(ast, `${prefix}.`);
        }
        ctx.print(ast, name);
        return null;
    }
    visitDeclareVarStmt(stmt, ctx) {
        super.visitDeclareVarStmt(stmt, ctx);
        if (stmt.hasModifier(o.StmtModifier.Exported)) {
            ctx.println(stmt, exportVar(stmt.name));
        }
        return null;
    }
    visitDeclareFunctionStmt(stmt, ctx) {
        super.visitDeclareFunctionStmt(stmt, ctx);
        if (stmt.hasModifier(o.StmtModifier.Exported)) {
            ctx.println(stmt, exportVar(stmt.name));
        }
        return null;
    }
    visitDeclareClassStmt(stmt, ctx) {
        super.visitDeclareClassStmt(stmt, ctx);
        if (stmt.hasModifier(o.StmtModifier.Exported)) {
            ctx.println(stmt, exportVar(stmt.name));
        }
        return null;
    }
}
function exportVar(varName) {
    return `Object.defineProperty(exports, '${varName}', { get: function() { return ${varName}; }});`;
}
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