syntax-parsed-arrow-then-directive.js

Enable keyboard shortcuts

/*

 * Any copyright is dedicated to the Public Domain.

 * http://creativecommons.org/licenses/publicdomain/

*/

//-----------------------------------------------------------------------------

var BUGNUMBER = 1596706;

var summary =

  "Properly apply a directive comment that's only tokenized by a syntax " +

  "parser (because the directive comment appears immediately after an arrow " +

  "function with expression body)";

print(BUGNUMBER + ": " + summary);

/**************

 * BEGIN TEST *

 **************/

var stack;

function reset()

  stack = "";

function assertStackContains(needle, msg)

  assertEq(stack.indexOf(needle) >= 0, true,

           `stack should contain '${needle}': ${msg}`);

Object.defineProperty(this, "detectSourceURL", {

  get() {

    stack = new Error().stack;

    return 17;

});

// block followed by semicolon

reset();

assertEq(eval(`x=>{};

//# sourceURL=http://example.com/foo.js

detectSourceURL`), 17);

assertStackContains("http://example.com/foo.js", "block, semi");

// block not followed by semicolon

reset();

assertEq(eval(`x=>{}

//# sourceURL=http://example.com/bar.js

detectSourceURL`), 17);

assertStackContains("http://example.com/bar.js", "block, not semi");

// expr followed by semicolon

reset();

assertEq(eval(`x=>y;

//# sourceURL=http://example.com/baz.js

detectSourceURL`), 17);

assertStackContains("http://example.com/baz.js", "expr, semi");

// expr not followed by semicolon

reset();

assertEq(eval(`x=>y

//# sourceURL=http://example.com/quux.js

detectSourceURL`), 17);

assertStackContains("http://example.com/quux.js", "expr, not semi");

/******************************************************************************/

if (typeof reportCompare === "function")

  reportCompare(true, true);

print("Tests complete");