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						- # Glob
 - 
 - Match files using the patterns the shell uses, like stars and stuff.
 - 
 - [](https://travis-ci.org/isaacs/node-glob/) [](https://ci.appveyor.com/project/isaacs/node-glob) [](https://coveralls.io/github/isaacs/node-glob?branch=master)
 - 
 - This is a glob implementation in JavaScript.  It uses the `minimatch`
 - library to do its matching.
 - 
 - 
 - 
 - ## Usage
 - 
 - Install with npm
 - 
 - ```
 - npm i glob
 - ```
 - 
 - ```javascript
 - var glob = require("glob")
 - 
 - // options is optional
 - glob("**/*.js", options, function (er, files) {
 -   // files is an array of filenames.
 -   // If the `nonull` option is set, and nothing
 -   // was found, then files is ["**/*.js"]
 -   // er is an error object or null.
 - })
 - ```
 - 
 - ## Glob Primer
 - 
 - "Globs" are the patterns you type when you do stuff like `ls *.js` on
 - the command line, or put `build/*` in a `.gitignore` file.
 - 
 - Before parsing the path part patterns, braced sections are expanded
 - into a set.  Braced sections start with `{` and end with `}`, with any
 - number of comma-delimited sections within.  Braced sections may contain
 - slash characters, so `a{/b/c,bcd}` would expand into `a/b/c` and `abcd`.
 - 
 - The following characters have special magic meaning when used in a
 - path portion:
 - 
 - * `*` Matches 0 or more characters in a single path portion
 - * `?` Matches 1 character
 - * `[...]` Matches a range of characters, similar to a RegExp range.
 -   If the first character of the range is `!` or `^` then it matches
 -   any character not in the range.
 - * `!(pattern|pattern|pattern)` Matches anything that does not match
 -   any of the patterns provided.
 - * `?(pattern|pattern|pattern)` Matches zero or one occurrence of the
 -   patterns provided.
 - * `+(pattern|pattern|pattern)` Matches one or more occurrences of the
 -   patterns provided.
 - * `*(a|b|c)` Matches zero or more occurrences of the patterns provided
 - * `@(pattern|pat*|pat?erN)` Matches exactly one of the patterns
 -   provided
 - * `**` If a "globstar" is alone in a path portion, then it matches
 -   zero or more directories and subdirectories searching for matches.
 -   It does not crawl symlinked directories.
 - 
 - ### Dots
 - 
 - If a file or directory path portion has a `.` as the first character,
 - then it will not match any glob pattern unless that pattern's
 - corresponding path part also has a `.` as its first character.
 - 
 - For example, the pattern `a/.*/c` would match the file at `a/.b/c`.
 - However the pattern `a/*/c` would not, because `*` does not start with
 - a dot character.
 - 
 - You can make glob treat dots as normal characters by setting
 - `dot:true` in the options.
 - 
 - ### Basename Matching
 - 
 - If you set `matchBase:true` in the options, and the pattern has no
 - slashes in it, then it will seek for any file anywhere in the tree
 - with a matching basename.  For example, `*.js` would match
 - `test/simple/basic.js`.
 - 
 - ### Empty Sets
 - 
 - If no matching files are found, then an empty array is returned.  This
 - differs from the shell, where the pattern itself is returned.  For
 - example:
 - 
 -     $ echo a*s*d*f
 -     a*s*d*f
 - 
 - To get the bash-style behavior, set the `nonull:true` in the options.
 - 
 - ### See Also:
 - 
 - * `man sh`
 - * `man bash` (Search for "Pattern Matching")
 - * `man 3 fnmatch`
 - * `man 5 gitignore`
 - * [minimatch documentation](https://github.com/isaacs/minimatch)
 - 
 - ## glob.hasMagic(pattern, [options])
 - 
 - Returns `true` if there are any special characters in the pattern, and
 - `false` otherwise.
 - 
 - Note that the options affect the results.  If `noext:true` is set in
 - the options object, then `+(a|b)` will not be considered a magic
 - pattern.  If the pattern has a brace expansion, like `a/{b/c,x/y}`
 - then that is considered magical, unless `nobrace:true` is set in the
 - options.
 - 
 - ## glob(pattern, [options], cb)
 - 
 - * `pattern` `{String}` Pattern to be matched
 - * `options` `{Object}`
 - * `cb` `{Function}`
 -   * `err` `{Error | null}`
 -   * `matches` `{Array<String>}` filenames found matching the pattern
 - 
 - Perform an asynchronous glob search.
 - 
 - ## glob.sync(pattern, [options])
 - 
 - * `pattern` `{String}` Pattern to be matched
 - * `options` `{Object}`
 - * return: `{Array<String>}` filenames found matching the pattern
 - 
 - Perform a synchronous glob search.
 - 
 - ## Class: glob.Glob
 - 
 - Create a Glob object by instantiating the `glob.Glob` class.
 - 
 - ```javascript
 - var Glob = require("glob").Glob
 - var mg = new Glob(pattern, options, cb)
 - ```
 - 
 - It's an EventEmitter, and starts walking the filesystem to find matches
 - immediately.
 - 
 - ### new glob.Glob(pattern, [options], [cb])
 - 
 - * `pattern` `{String}` pattern to search for
 - * `options` `{Object}`
 - * `cb` `{Function}` Called when an error occurs, or matches are found
 -   * `err` `{Error | null}`
 -   * `matches` `{Array<String>}` filenames found matching the pattern
 - 
 - Note that if the `sync` flag is set in the options, then matches will
 - be immediately available on the `g.found` member.
 - 
 - ### Properties
 - 
 - * `minimatch` The minimatch object that the glob uses.
 - * `options` The options object passed in.
 - * `aborted` Boolean which is set to true when calling `abort()`.  There
 -   is no way at this time to continue a glob search after aborting, but
 -   you can re-use the statCache to avoid having to duplicate syscalls.
 - * `cache` Convenience object.  Each field has the following possible
 -   values:
 -   * `false` - Path does not exist
 -   * `true` - Path exists
 -   * `'FILE'` - Path exists, and is not a directory
 -   * `'DIR'` - Path exists, and is a directory
 -   * `[file, entries, ...]` - Path exists, is a directory, and the
 -     array value is the results of `fs.readdir`
 - * `statCache` Cache of `fs.stat` results, to prevent statting the same
 -   path multiple times.
 - * `symlinks` A record of which paths are symbolic links, which is
 -   relevant in resolving `**` patterns.
 - * `realpathCache` An optional object which is passed to `fs.realpath`
 -   to minimize unnecessary syscalls.  It is stored on the instantiated
 -   Glob object, and may be re-used.
 - 
 - ### Events
 - 
 - * `end` When the matching is finished, this is emitted with all the
 -   matches found.  If the `nonull` option is set, and no match was found,
 -   then the `matches` list contains the original pattern.  The matches
 -   are sorted, unless the `nosort` flag is set.
 - * `match` Every time a match is found, this is emitted with the specific
 -   thing that matched. It is not deduplicated or resolved to a realpath.
 - * `error` Emitted when an unexpected error is encountered, or whenever
 -   any fs error occurs if `options.strict` is set.
 - * `abort` When `abort()` is called, this event is raised.
 - 
 - ### Methods
 - 
 - * `pause` Temporarily stop the search
 - * `resume` Resume the search
 - * `abort` Stop the search forever
 - 
 - ### Options
 - 
 - All the options that can be passed to Minimatch can also be passed to
 - Glob to change pattern matching behavior.  Also, some have been added,
 - or have glob-specific ramifications.
 - 
 - All options are false by default, unless otherwise noted.
 - 
 - All options are added to the Glob object, as well.
 - 
 - If you are running many `glob` operations, you can pass a Glob object
 - as the `options` argument to a subsequent operation to shortcut some
 - `stat` and `readdir` calls.  At the very least, you may pass in shared
 - `symlinks`, `statCache`, `realpathCache`, and `cache` options, so that
 - parallel glob operations will be sped up by sharing information about
 - the filesystem.
 - 
 - * `cwd` The current working directory in which to search.  Defaults
 -   to `process.cwd()`.
 - * `root` The place where patterns starting with `/` will be mounted
 -   onto.  Defaults to `path.resolve(options.cwd, "/")` (`/` on Unix
 -   systems, and `C:\` or some such on Windows.)
 - * `dot` Include `.dot` files in normal matches and `globstar` matches.
 -   Note that an explicit dot in a portion of the pattern will always
 -   match dot files.
 - * `nomount` By default, a pattern starting with a forward-slash will be
 -   "mounted" onto the root setting, so that a valid filesystem path is
 -   returned.  Set this flag to disable that behavior.
 - * `mark` Add a `/` character to directory matches.  Note that this
 -   requires additional stat calls.
 - * `nosort` Don't sort the results.
 - * `stat` Set to true to stat *all* results.  This reduces performance
 -   somewhat, and is completely unnecessary, unless `readdir` is presumed
 -   to be an untrustworthy indicator of file existence.
 - * `silent` When an unusual error is encountered when attempting to
 -   read a directory, a warning will be printed to stderr.  Set the
 -   `silent` option to true to suppress these warnings.
 - * `strict` When an unusual error is encountered when attempting to
 -   read a directory, the process will just continue on in search of
 -   other matches.  Set the `strict` option to raise an error in these
 -   cases.
 - * `cache` See `cache` property above.  Pass in a previously generated
 -   cache object to save some fs calls.
 - * `statCache` A cache of results of filesystem information, to prevent
 -   unnecessary stat calls.  While it should not normally be necessary
 -   to set this, you may pass the statCache from one glob() call to the
 -   options object of another, if you know that the filesystem will not
 -   change between calls.  (See "Race Conditions" below.)
 - * `symlinks` A cache of known symbolic links.  You may pass in a
 -   previously generated `symlinks` object to save `lstat` calls when
 -   resolving `**` matches.
 - * `sync` DEPRECATED: use `glob.sync(pattern, opts)` instead.
 - * `nounique` In some cases, brace-expanded patterns can result in the
 -   same file showing up multiple times in the result set.  By default,
 -   this implementation prevents duplicates in the result set.  Set this
 -   flag to disable that behavior.
 - * `nonull` Set to never return an empty set, instead returning a set
 -   containing the pattern itself.  This is the default in glob(3).
 - * `debug` Set to enable debug logging in minimatch and glob.
 - * `nobrace` Do not expand `{a,b}` and `{1..3}` brace sets.
 - * `noglobstar` Do not match `**` against multiple filenames.  (Ie,
 -   treat it as a normal `*` instead.)
 - * `noext` Do not match `+(a|b)` "extglob" patterns.
 - * `nocase` Perform a case-insensitive match.  Note: on
 -   case-insensitive filesystems, non-magic patterns will match by
 -   default, since `stat` and `readdir` will not raise errors.
 - * `matchBase` Perform a basename-only match if the pattern does not
 -   contain any slash characters.  That is, `*.js` would be treated as
 -   equivalent to `**/*.js`, matching all js files in all directories.
 - * `nodir` Do not match directories, only files.  (Note: to match
 -   *only* directories, simply put a `/` at the end of the pattern.)
 - * `ignore` Add a pattern or an array of glob patterns to exclude matches.
 -   Note: `ignore` patterns are *always* in `dot:true` mode, regardless
 -   of any other settings.
 - * `follow` Follow symlinked directories when expanding `**` patterns.
 -   Note that this can result in a lot of duplicate references in the
 -   presence of cyclic links.
 - * `realpath` Set to true to call `fs.realpath` on all of the results.
 -   In the case of a symlink that cannot be resolved, the full absolute
 -   path to the matched entry is returned (though it will usually be a
 -   broken symlink)
 - * `absolute` Set to true to always receive absolute paths for matched
 -   files.  Unlike `realpath`, this also affects the values returned in
 -   the `match` event.
 - * `fs` File-system object with Node's `fs` API. By default, the built-in
 -   `fs` module will be used. Set to a volume provided by a library like
 -   `memfs` to avoid using the "real" file-system.
 - 
 - ## Comparisons to other fnmatch/glob implementations
 - 
 - While strict compliance with the existing standards is a worthwhile
 - goal, some discrepancies exist between node-glob and other
 - implementations, and are intentional.
 - 
 - The double-star character `**` is supported by default, unless the
 - `noglobstar` flag is set.  This is supported in the manner of bsdglob
 - and bash 4.3, where `**` only has special significance if it is the only
 - thing in a path part.  That is, `a/**/b` will match `a/x/y/b`, but
 - `a/**b` will not.
 - 
 - Note that symlinked directories are not crawled as part of a `**`,
 - though their contents may match against subsequent portions of the
 - pattern.  This prevents infinite loops and duplicates and the like.
 - 
 - If an escaped pattern has no matches, and the `nonull` flag is set,
 - then glob returns the pattern as-provided, rather than
 - interpreting the character escapes.  For example,
 - `glob.match([], "\\*a\\?")` will return `"\\*a\\?"` rather than
 - `"*a?"`.  This is akin to setting the `nullglob` option in bash, except
 - that it does not resolve escaped pattern characters.
 - 
 - If brace expansion is not disabled, then it is performed before any
 - other interpretation of the glob pattern.  Thus, a pattern like
 - `+(a|{b),c)}`, which would not be valid in bash or zsh, is expanded
 - **first** into the set of `+(a|b)` and `+(a|c)`, and those patterns are
 - checked for validity.  Since those two are valid, matching proceeds.
 - 
 - ### Comments and Negation
 - 
 - Previously, this module let you mark a pattern as a "comment" if it
 - started with a `#` character, or a "negated" pattern if it started
 - with a `!` character.
 - 
 - These options were deprecated in version 5, and removed in version 6.
 - 
 - To specify things that should not match, use the `ignore` option.
 - 
 - ## Windows
 - 
 - **Please only use forward-slashes in glob expressions.**
 - 
 - Though windows uses either `/` or `\` as its path separator, only `/`
 - characters are used by this glob implementation.  You must use
 - forward-slashes **only** in glob expressions.  Back-slashes will always
 - be interpreted as escape characters, not path separators.
 - 
 - Results from absolute patterns such as `/foo/*` are mounted onto the
 - root setting using `path.join`.  On windows, this will by default result
 - in `/foo/*` matching `C:\foo\bar.txt`.
 - 
 - ## Race Conditions
 - 
 - Glob searching, by its very nature, is susceptible to race conditions,
 - since it relies on directory walking and such.
 - 
 - As a result, it is possible that a file that exists when glob looks for
 - it may have been deleted or modified by the time it returns the result.
 - 
 - As part of its internal implementation, this program caches all stat
 - and readdir calls that it makes, in order to cut down on system
 - overhead.  However, this also makes it even more susceptible to races,
 - especially if the cache or statCache objects are reused between glob
 - calls.
 - 
 - Users are thus advised not to use a glob result as a guarantee of
 - filesystem state in the face of rapid changes.  For the vast majority
 - of operations, this is never a problem.
 - 
 - ## Glob Logo
 - Glob's logo was created by [Tanya Brassie](http://tanyabrassie.com/). Logo files can be found [here](https://github.com/isaacs/node-glob/tree/master/logo).
 - 
 - The logo is licensed under a [Creative Commons Attribution-ShareAlike 4.0 International License](https://creativecommons.org/licenses/by-sa/4.0/).
 - 
 - ## Contributing
 - 
 - Any change to behavior (including bugfixes) must come with a test.
 - 
 - Patches that fail tests or reduce performance will be rejected.
 - 
 - ```
 - # to run tests
 - npm test
 - 
 - # to re-generate test fixtures
 - npm run test-regen
 - 
 - # to benchmark against bash/zsh
 - npm run bench
 - 
 - # to profile javascript
 - npm run prof
 - ```
 - 
 - 
 
 
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