Implement Symbol.prototype.description accessor

[HalidOdat]

It changes the following:

• Implement Symbol.prototype.description accessor

[github-actions]

Test262 conformance changes:

Test result	master count	PR count	difference
Total	78,497	78,497	0
Passed	25,515	25,523	+8
Ignored	15,587	15,587	0
Failed	37,395	37,387	-8
Panics	13	14	+1
Conformance	32.50	32.51	+0.01%

[github-actions]

Benchmark for 7e3c392

Click to view benchmark

Test	PR Benchmark	Master Benchmark	%
Arithmetic operations (Execution)	334.4±11.04ns	328.5±12.03ns	+1.80%
Arithmetic operations (Full)	218.5±10.98µs	225.4±8.26µs	-3.06%
Array access (Execution)	5.6±0.31µs	5.3±0.29µs	+5.66%
Array access (Full)	240.1±12.30µs	249.7±8.83µs	-3.84%
Array creation (Execution)	2.6±0.14ms	2.6±0.14ms	0.00%
Array creation (Full)	2.8±0.16ms	2.9±0.10ms	-3.45%
Array pop (Execution)	933.9±34.01µs	807.4±37.25µs	+15.67%
Array pop (Full)	1237.4±73.43µs	1321.9±46.62µs	-6.39%
Boolean Object Access (Execution)	4.9±0.25µs	4.9±0.19µs	0.00%
Boolean Object Access (Full)	235.2±10.99µs	248.6±9.33µs	-5.39%
Clean js (Execution)	614.5±28.57µs	608.6±25.90µs	+0.97%
Clean js (Full)	844.7±47.55µs	888.3±32.88µs	-4.91%
Clean js (Parser)	39.1±2.43µs	37.5±1.95µs	+4.27%
Create Realm	400.2±22.21ns	407.2±12.08ns	-1.72%
Dynamic Object Property Access (Execution)	4.8±0.12µs	4.3±0.24µs	+11.63%
Dynamic Object Property Access (Full)	237.1±12.71µs	249.8±8.05µs	-5.08%
Expression (Parser)	6.2±0.39µs	6.3±0.21µs	-1.59%
Fibonacci (Execution)	703.8±32.06µs	695.1±35.88µs	+1.25%
Fibonacci (Full)	903.4±40.08µs	951.5±34.10µs	-5.06%
For loop (Execution)	20.4±0.58µs	19.7±0.74µs	+3.55%
For loop (Full)	248.0±12.55µs	267.9±11.43µs	-7.43%
For loop (Parser)	18.6±1.12µs	19.0±0.84µs	-2.11%
Goal Symbols (Parser)	12.8±0.75µs	12.6±0.71µs	+1.59%
Hello World (Parser)	3.5±0.19µs	3.6±0.14µs	-2.78%
Long file (Parser)	711.3±31.42ns	697.0±37.35ns	+2.05%
Mini js (Execution)	513.8±30.63µs	551.5±21.53µs	-6.84%
Mini js (Full)	768.1±39.73µs	818.2±28.39µs	-6.12%
Mini js (Parser)	34.1±2.02µs	32.6±1.75µs	+4.60%
Number Object Access (Execution)	3.8±0.19µs	4.0±0.13µs	-5.00%
Number Object Access (Full)	231.0±13.63µs	239.3±7.99µs	-3.47%
Object Creation (Execution)	3.6±0.18µs	3.7±0.21µs	-2.70%
Object Creation (Full)	226.0±13.66µs	246.8±9.06µs	-8.43%
RegExp (Execution)	8.7±0.48µs	9.3±0.40µs	-6.45%
RegExp (Full)	236.7±11.10µs	247.6±9.77µs	-4.40%
RegExp Literal (Execution)	10.3±0.58µs	10.5±0.36µs	-1.90%
RegExp Literal (Full)	239.3±13.33µs	259.7±10.29µs	-7.86%
RegExp Literal Creation (Execution)	9.0±0.45µs	9.5±0.54µs	-5.26%
RegExp Literal Creation (Full)	238.6±13.62µs	252.7±9.05µs	-5.58%
Static Object Property Access (Execution)	3.9±0.24µs	3.9±0.27µs	0.00%
Static Object Property Access (Full)	229.0±10.70µs	242.4±8.61µs	-5.53%
String Object Access (Execution)	6.6±0.33µs	6.8±0.22µs	-2.94%
String Object Access (Full)	243.2±14.73µs	250.4±10.39µs	-2.88%
String comparison (Execution)	5.7±0.28µs	6.1±0.21µs	-6.56%
String comparison (Full)	232.7±12.54µs	244.3±8.70µs	-4.75%
String concatenation (Execution)	4.9±0.22µs	4.9±0.17µs	0.00%
String concatenation (Full)	235.9±14.16µs	235.5±8.40µs	+0.17%
String copy (Execution)	3.4±0.14µs	3.6±0.11µs	-5.56%
String copy (Full)	233.7±16.67µs	233.1±8.53µs	+0.26%
Symbols (Execution)	2.9±0.15µs	3.0±0.12µs	-3.33%
Symbols (Full)	220.1±12.08µs	225.6±6.86µs	-2.44%

[RageKnify]

Confusing that panics were introduced, but might be the ghost 2 that keep showing up in CI.

[github-actions]

Benchmark for a5635e4

Click to view benchmark

Test	PR Benchmark	Master Benchmark	%
Arithmetic operations (Execution)	359.3±6.46ns	364.6±7.09ns	-1.45%
Arithmetic operations (Full)	241.4±5.80µs	236.7±5.20µs	+1.99%
Array access (Execution)	5.9±0.14µs	6.1±0.07µs	-3.28%
Array access (Full)	267.4±6.16µs	261.3±6.23µs	+2.33%
Array creation (Execution)	2.7±0.07ms	2.8±0.04ms	-3.57%
Array creation (Full)	3.1±0.07ms	3.1±0.07ms	0.00%
Array pop (Execution)	880.9±21.77µs	883.2±21.48µs	-0.26%
Array pop (Full)	1361.0±33.31µs	1360.9±29.49µs	+0.01%
Boolean Object Access (Execution)	5.1±0.12µs	5.1±0.12µs	0.00%
Boolean Object Access (Full)	256.3±6.62µs	257.4±5.12µs	-0.43%
Clean js (Execution)	641.4±14.54µs	642.8±15.07µs	-0.22%
Clean js (Full)	938.8±21.62µs	941.3±19.18µs	-0.27%
Clean js (Parser)	39.4±0.89µs	39.2±1.14µs	+0.51%
Create Realm	429.8±7.62ns	429.9±8.96ns	-0.02%
Dynamic Object Property Access (Execution)	5.0±0.12µs	4.9±0.10µs	+2.04%
Dynamic Object Property Access (Full)	261.6±6.49µs	261.3±7.53µs	+0.11%
Expression (Parser)	6.6±0.12µs	6.7±0.16µs	-1.49%
Fibonacci (Execution)	771.1±11.86µs	766.2±14.34µs	+0.64%
Fibonacci (Full)	1024.3±25.23µs	1019.6±23.79µs	+0.46%
For loop (Execution)	22.2±0.37µs	21.5±0.43µs	+3.26%
For loop (Full)	276.6±7.27µs	278.7±7.53µs	-0.75%
For loop (Parser)	19.1±0.47µs	19.2±0.45µs	-0.52%
Goal Symbols (Parser)	13.4±0.33µs	13.4±0.35µs	0.00%
Hello World (Parser)	3.7±0.07µs	3.7±0.08µs	0.00%
Long file (Parser)	752.5±18.12ns	769.7±17.87ns	-2.23%
Mini js (Execution)	585.3±19.51µs	579.8±15.79µs	+0.95%
Mini js (Full)	866.1±22.87µs	853.1±22.78µs	+1.52%
Mini js (Parser)	34.6±0.91µs	35.2±0.52µs	-1.70%
Number Object Access (Execution)	4.0±0.09µs	4.0±0.09µs	0.00%
Number Object Access (Full)	255.0±5.85µs	257.2±5.32µs	-0.86%
Object Creation (Execution)	4.2±0.11µs	4.2±0.12µs	0.00%
Object Creation (Full)	252.6±8.74µs	257.1±5.50µs	-1.75%
RegExp (Execution)	11.3±0.22µs	11.4±0.25µs	-0.88%
RegExp (Full)	268.8±6.36µs	268.4±3.09µs	+0.15%
RegExp Literal (Execution)	11.4±0.25µs	11.3±0.24µs	+0.88%
RegExp Literal (Full)	269.6±5.24µs	277.1±2.44µs	-2.71%
RegExp Literal Creation (Execution)	10.2±0.18µs	10.0±0.22µs	+2.00%
RegExp Literal Creation (Full)	264.7±6.16µs	263.6±4.28µs	+0.42%
Static Object Property Access (Execution)	4.5±0.09µs	4.5±0.09µs	0.00%
Static Object Property Access (Full)	260.7±5.89µs	257.2±4.53µs	+1.36%
String Object Access (Execution)	7.2±0.29µs	7.1±0.20µs	+1.41%
String Object Access (Full)	261.7±5.23µs	260.5±7.05µs	+0.46%
String comparison (Execution)	6.3±0.16µs	6.5±0.17µs	-3.08%
String comparison (Full)	260.8±5.52µs	261.1±5.64µs	-0.11%
String concatenation (Execution)	5.3±0.16µs	5.2±0.13µs	+1.92%
String concatenation (Full)	253.2±5.49µs	255.3±5.25µs	-0.82%
String copy (Execution)	3.7±0.11µs	3.8±0.08µs	-2.63%
String copy (Full)	247.8±6.52µs	250.6±6.18µs	-1.12%
Symbols (Execution)	3.3±0.06µs	3.2±0.08µs	+3.12%
Symbols (Full)	239.6±5.11µs	237.2±6.64µs	+1.01%