regexpp
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A regular expression parser for ECMAScript.
$ npm install regexpp
import {
AST,
RegExpParser,
RegExpValidator,
RegExpVisitor,
parseRegExpLiteral,
validateRegExpLiteral,
visitRegExpAST
} from "regexpp"
Parse a given regular expression literal then make AST object.
This is equivalent to new RegExpParser(options).parseLiteral(source)
.
source
(string | RegExp
) The source code to parse.options?
(RegExpParser.Options
) The options to parse.Validate a given regular expression literal.
This is equivalent to new RegExpValidator(options).validateLiteral(source)
.
source
(string
) The source code to validate.options?
(RegExpValidator.Options
) The options to validate.Visit each node of a given AST.
This is equivalent to new RegExpVisitor(handlers).visit(ast)
.
ast
(AST.Node
) The AST to visit.handlers
(RegExpVisitor.Handlers
) The callbacks.options?
(RegExpParser.Options
) The options to parse.Parse a regular expression literal.
source
(string
) The source code to parse. E.g. "/abc/g"
.start?
(number
) The start index in the source code. Default is 0
.end?
(number
) The end index in the source code. Default is source.length
.Parse a regular expression pattern.
source
(string
) The source code to parse. E.g. "abc"
.start?
(number
) The start index in the source code. Default is 0
.end?
(number
) The end index in the source code. Default is source.length
.uFlag?
(boolean
) The flag to enable Unicode mode.Parse a regular expression flags.
source
(string
) The source code to parse. E.g. "gim"
.start?
(number
) The start index in the source code. Default is 0
.end?
(number
) The end index in the source code. Default is source.length
.options
(RegExpValidator.Options
) The options to validate.Validate a regular expression literal.
source
(string
) The source code to validate.start?
(number
) The start index in the source code. Default is 0
.end?
(number
) The end index in the source code. Default is source.length
.Validate a regular expression pattern.
source
(string
) The source code to validate.start?
(number
) The start index in the source code. Default is 0
.end?
(number
) The end index in the source code. Default is source.length
.uFlag?
(boolean
) The flag to enable Unicode mode.Validate a regular expression flags.
source
(string
) The source code to validate.start?
(number
) The start index in the source code. Default is 0
.end?
(number
) The end index in the source code. Default is source.length
.handlers
(RegExpVisitor.Handlers
) The callbacks.Validate a regular expression literal.
ast
(AST.Node
) The AST to visit.Welcome contributing!
Please use GitHub's Issues/PRs.
npm test
runs tests and measures coverage.npm run build
compiles TypeScript source code to index.js
, index.js.map
, and index.d.ts
.npm run clean
removes the temporary files which are created by npm test
and npm run build
.npm run lint
runs ESLint.npm run update:test
updates test fixtures.npm run update:ids
updates src/unicode/ids.ts
.npm run watch
runs tests with --watch
option.FAQs
Regular expression parser for ECMAScript.
The npm package regexpp receives a total of 18,495,669 weekly downloads. As such, regexpp popularity was classified as popular.
We found that regexpp demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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