'navigator' may be renamed by the compiler.
'navigator' may be renamed by the compiler.

Use quoted name instead.  Also, navigator doesn't exist in Node, or non-browser environments.
google/blockly,mark-friedman/blockly,mark-friedman/blockly,rachel-fenichel/blockly,rachel-fenichel/blockly,mark-friedman/blockly,mark-friedman/blockly,google/blockly,rachel-fenichel/blockly,mark-friedman/blockly,rachel-fenichel/blockly,google/blockly,mark-friedman/blockly,google/blockly,rachel-fenichel/blockly,google/blockly,google/blockly,rachel-fenichel/blockly,google/blockly,rachel-fenichel/blockly