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17 lines
886 B
Plaintext
17 lines
886 B
Plaintext
- Prohibit eval() usage, same as Function or new Function
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eval() requires run time compilation because the source text might not
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appear in the program or can be generated at run time. Run time compilation
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is required to support the Function constructor and the Function function
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when the body is not a string literal.
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- Limit Unicode support
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- Cut Number from 64bit to 32bit/16/8bit
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- Limit recursion level
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- Do not allow addition, deletion or assignment to the properties of built-in
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objects.
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This limitation is needed to support a more efficient implementation based
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on static compilation of built-in objects without risking that the objects
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are mutated on shadowed by dynamically added properties.
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- Do not allow usage of with statement
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The with makes access to named references inefficient, because the scopes
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for such access cannot be compiled until run time.
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