Parser
The parser instance, found in the compiler, is used to parse each module
being processed by webpack. The parser is yet another webpack class that
extends tapable and provides a variety of tapable hooks that can be used by
plugin authors to customize the parsing process.
The parser is found within module factories and therefore takes little
more work to access:
compiler.hooks.normalModuleFactory.tap('MyPlugin', factory => {
factory.hooks.parser.tap('MyPlugin', (parser, options) => {
parser.hooks.someHook.tap(/* ... */);
});
});
As with the compiler, tapAsync and tapPromise may also be available
depending on the type of hook.
Hooks
The following lifecycle hooks are exposed by the parser and can be accessed
as such:
evaluateTypeof
SyncBailHook
Evaluate the type of an identifier.
Parameters: expression
evaluate
SyncBailHook
Evaluate an expression.
Parameters: expression
evaluateIdentifier
SyncBailHook
Evaluate an identifier that is a free variable.
Parameters: expression
evaluateDefinedIdentifier
SyncBailHook
Evaluate an identifier that is a defined variable.
Parameters: expression
evaluateCallExpressionMember
SyncBailHook
Evaluate a call to a member function of a successfully evaluated expression.
Parameters: expression param
statement
SyncBailHook
General purpose hook that is called when parsing statements in a code fragment.
Parameters: statement
statementIf
SyncBailHook
...
Parameters: statement
label
SyncBailHook
...
Parameters: statement
import
SyncBailHook
...
Parameters: statement source
importSpecifier
SyncBailHook
...
Parameters: statement source exportName identifierName
export
SyncBailHook
...
Parameters: statement
exportImport
SyncBailHook
...
Parameters: statement source
exportDeclaration
SyncBailHook
...
Parameters: statement declaration
exportExpression
SyncBailHook
...
Parameters: statement declaration
exportSpecifier
SyncBailHook
...
Parameters: statement identifierName exportName index
exportImportSpecifier
SyncBailHook
...
Parameters: statement source identifierName exportName index
varDeclaration
SyncBailHook
...
Parameters: declaration
varDeclarationLet
SyncBailHook
...
Parameters: declaration
varDeclarationConst
SyncBailHook
...
Parameters: declaration
varDeclarationVar
SyncBailHook
...
Parameters: declaration
canRename
SyncBailHook
...
Parameters: initExpression
rename
SyncBailHook
...
Parameters: initExpression
assigned
SyncBailHook
...
Parameters: expression
assign
SyncBailHook
...
Parameters: expression
typeof
SyncBailHook
...
Parameters: expression
call
SyncBailHook
...
Parameters: expression
callAnyMember
SyncBailHook
...
Parameters: expression
new
SyncBailHook
...
Parameters: expression
expression
SyncBailHook
...
Parameters: expression
expressionAnyMember
SyncBailHook
...
Parameters: expression
expressionConditionalOperator
SyncBailHook
...
Parameters: expression
program
SyncBailHook
Get access to the abstract syntax tree (AST) of a code fragment
Parameters: ast comments
