//@requireOptions("--useImportAssertion=true")

function shouldThrow(func, errorMessage) {
    var errorThrown = false;
    var error = null;
    try {
        func();
    } catch (e) {
        errorThrown = true;
        error = e;
    }
    if (!errorThrown)
        throw new Error('not thrown');
    if (errorMessage) {
        if (String(error) !== errorMessage)
            throw new Error(`bad error: ${String(error)}`);
    }
}

function checkModuleSyntaxError(source, errorMessage) {
    shouldThrow(() => checkModuleSyntax(source), errorMessage);
}

var list = [
    String.raw`import v from "mod"`,
    String.raw`import * as ns from "mod"`,
    String.raw`import {x} from "mod"`,
    String.raw`import {x,} from "mod"`,
    String.raw`import {} from "mod"`,
    String.raw`import {x as v} from "mod"`,
    String.raw`export {x} from "mod"`,
    String.raw`export {v as x} from "mod"`,
    String.raw`export * from "mod"`,
    String.raw`export * as b from "Cocoa"`,
    String.raw`export * as delete from "Cocoa"`,
    String.raw`import a, { b as c } from "Cocoa"`,
    String.raw`import d, { e, f, g as h } from "Cappuccino"`,
    String.raw`import { } from "Cappuccino"`,
    String.raw`import i, * as j from "Cappuccino"`,
    String.raw`import a, { } from "Cappuccino"`,
    String.raw`import a, { b, } from "Cappuccino"`,
    String.raw`import * as from from "Matcha"`,
    String.raw`import * as as from "Cocoa"`,
    String.raw`import { default as module } from "Cocoa"`,
    String.raw`export * from "Cocoa"`,
    String.raw`export { } from "Cocoa"`,
    String.raw`export { a } from "Cocoa"`,
    String.raw`export { a as b } from "Cocoa"`,
    String.raw`export { a, b } from "Cocoa"`,
    String.raw`export { default } from "Cocoa"`,
    String.raw`export { enum } from "Cocoa"`,
    String.raw`export { default as default } from "Cocoa"`,
    String.raw`export { enum as enum } from "Cocoa"`,
];

for (let entry of list) {
    checkModuleSyntaxError(entry + ` assert { , }`);
    checkModuleSyntaxError(entry + ` assert { type: json }`);
    checkModuleSyntaxError(entry + ` assert { type, }`);
    checkModuleSyntaxError(entry + ` assert { type: "json",, }`);
    checkModuleSyntaxError(entry + ` assert { `);
}