@nodesecure/js-x-ray/dist/JsSourceParser.js

JavaScript AST XRay analysis

// Import Third-party Dependencies
import { parseScript } from "meriyah";
// CONSTANTS
const kParsingOptions = {
    next: true,
    loc: true,
    raw: true,
    jsx: true
};
export class JsSourceParser {
    parse(source, options = {}) {
        const { isEcmaScriptModule } = options;
        try {
            const { body } = parseScript(source, {
                ...kParsingOptions,
                module: isEcmaScriptModule,
                globalReturn: !isEcmaScriptModule
            });
            return body;
        }
        catch (error) {
            const syntaxError = error;
            const isIllegalReturn = syntaxError.description.includes("Illegal return statement");
            if (syntaxError.name === "SyntaxError" && (syntaxError.description.includes("The import keyword") ||
                syntaxError.description.includes("The export keyword") ||
                isIllegalReturn)) {
                const { body } = parseScript(source, {
                    ...kParsingOptions,
                    module: true,
                    globalReturn: isIllegalReturn
                });
                return body;
            }
            throw error;
        }
    }
}
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