Robert Fancsik

Implement optional chaining

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JerryScript-DCO-1.0-Signed-off-by: Robert Fancsik [email protected]

Rework VM dispatch

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Overview: - `VM_OC_*` opcodes are removed, now the dispatch is based on the `CBC`/`CBC_EXT` opcode - The common argument decoding is removed, now each opcode resolves it's arguments individually using...

This patch fixes #4925. JerryScript-DCO-1.0-Signed-off-by: Robert Fancsik [email protected]

Implement String.prototype.normalize

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JerryScript-DCO-1.0-Signed-off-by: Robert Fancsik [email protected]

This patch fixes #4900. JerryScript-DCO-1.0-Signed-off-by: Robert Fancsik [email protected]

This patch fixes #4888. JerryScript-DCO-1.0-Signed-off-by: Robert Fancsik [email protected]

Assertion 'ECMA_STRING_IS_REF_EQUALS_TO_ONE (string_p)' in ecma_free_string_list

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###### JerryScript revision 8ba0d1b6ee5a065a42f3b306771ad8e3c0d819bc ###### Build platform Ubuntu 18.04.5 LTS (Linux 4.15.0-128-generic x86_64) ###### Build steps ```sh ./tools/build.py --clean --debug --logging=on ``` ###### Test case ```js function* g() { class...