**[as-wasi](#readmemd)** > Globals # as-wasi ## Index ### Classes * [CommandLine](#classescommandlinemd) * [Console](#classesconsolemd) * [Date](#classesdatemd) * [Descriptor](#classesdescriptormd) * [Environ](#classesenvironmd) * [EnvironEntry](#classesenvironentrymd) * [FileStat](#classesfilestatmd) * [FileSystem](#classesfilesystemmd) * [Performance](#classesperformancemd) * [Process](#classesprocessmd) * [Random](#classesrandommd) * [StringUtils](#classesstringutilsmd) * [Time](#classestimemd) * [WASIError](#classeswasierrormd) ### Type aliases * [aisize](#aisize) ### Functions * [wasi\_abort](#wasi_abort) ## Type aliases ### aisize Ƭ **aisize**: i32 *Defined in [assembly/as-wasi.ts:55](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L55)* ## Functions ### wasi\_abort ▸ **wasi_abort**(`message?`: string, `fileName?`: string, `lineNumber?`: u32, `columnNumber?`: u32): void *Defined in [assembly/as-wasi.ts:1102](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L1102)* #### Parameters: Name | Type | Default value | ------ | ------ | ------ | `message` | string | "" | `fileName` | string | "" | `lineNumber` | u32 | 0 | `columnNumber` | u32 | 0 | **Returns:** void # Classes **[as-wasi](#readmemd)** > [Globals](#readmemd) / CommandLine ## Class: CommandLine ### Hierarchy * **CommandLine** ### Index #### Constructors * [constructor](#constructor) #### Properties * [args](#args) #### Accessors * [all](#all) #### Methods * [all](#all) * [get](#get) ### Constructors #### constructor \+ **new CommandLine**(): [CommandLine](#classescommandlinemd) *Defined in [assembly/as-wasi.ts:989](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L989)* **Returns:** [CommandLine](#classescommandlinemd) ### Properties #### args • **args**: string[] *Defined in [assembly/as-wasi.ts:989](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L989)* ### Accessors #### all • `Static`get **all**(): Array\ *Defined in [assembly/as-wasi.ts:1018](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L1018)* Return all the command-line arguments **Returns:** Array\ ### Methods #### all ▸ **all**(): Array\ *Defined in [assembly/as-wasi.ts:1026](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L1026)* Return all the command-line arguments **Returns:** Array\ ___ #### get ▸ **get**(`index`: usize): string \| null *Defined in [assembly/as-wasi.ts:1034](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L1034)* Return the i-th command-ine argument ##### Parameters: Name | Type | ------ | ------ | `index` | usize | **Returns:** string \| null **[as-wasi](#readmemd)** > [Globals](#readmemd) / Console ## Class: Console ### Hierarchy * **Console** ### Index #### Methods * [error](#error) * [log](#log) * [readAll](#readall) * [readLine](#readline) * [write](#write) ### Methods #### error ▸ `Static`**error**(`s`: string, `newline?`: bool): void *Defined in [assembly/as-wasi.ts:857](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L857)* Write an error to the console ##### Parameters: Name | Type | Default value | Description | ------ | ------ | ------ | ------ | `s` | string | - | string | `newline` | bool | true | `false` to avoid inserting a newline after the string | **Returns:** void ___ #### log ▸ `Static`**log**(`s`: string): void *Defined in [assembly/as-wasi.ts:848](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L848)* Alias for `Console.write()` ##### Parameters: Name | Type | ------ | ------ | `s` | string | **Returns:** void ___ #### readAll ▸ `Static`**readAll**(): string \| null *Defined in [assembly/as-wasi.ts:834](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L834)* Read an UTF8 string from the console, convert it to a native string **Returns:** string \| null ___ #### readLine ▸ `Static`**readLine**(): string \| null *Defined in [assembly/as-wasi.ts:841](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L841)* Read a line of text from the console, convert it from UTF8 to a native string **Returns:** string \| null ___ #### write ▸ `Static`**write**(`s`: string, `newline?`: bool): void *Defined in [assembly/as-wasi.ts:827](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L827)* Write a string to the console ##### Parameters: Name | Type | Default value | Description | ------ | ------ | ------ | ------ | `s` | string | - | string | `newline` | bool | true | `false` to avoid inserting a newline after the string | **Returns:** void **[as-wasi](#readmemd)** > [Globals](#readmemd) / Date ## Class: Date ### Hierarchy * **Date** ### Index #### Methods * [now](#now) ### Methods #### now ▸ `Static`**now**(): f64 *Defined in [assembly/as-wasi.ts:895](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L895)* Return the current timestamp, as a number of milliseconds since the epoch **Returns:** f64 **[as-wasi](#readmemd)** > [Globals](#readmemd) / Descriptor ## Class: Descriptor A descriptor, that doesn't necessarily have to represent a file ### Hierarchy * **Descriptor** ### Index #### Constructors * [constructor](#constructor) #### Accessors * [rawfd](#rawfd) * [Invalid](#invalid) * [Stderr](#stderr) * [Stdin](#stdin) * [Stdout](#stdout) #### Methods * [advise](#advise) * [allocate](#allocate) * [close](#close) * [dirName](#dirname) * [fatime](#fatime) * [fdatasync](#fdatasync) * [fileType](#filetype) * [fmtime](#fmtime) * [fsync](#fsync) * [ftruncate](#ftruncate) * [futimes](#futimes) * [read](#read) * [readAll](#readall) * [readLine](#readline) * [readString](#readstring) * [seek](#seek) * [setFlags](#setflags) * [stat](#stat) * [tell](#tell) * [touch](#touch) * [write](#write) * [writeString](#writestring) * [writeStringLn](#writestringln) ### Constructors #### constructor \+ **new Descriptor**(`rawfd`: fd): [Descriptor](#classesdescriptormd) *Defined in [assembly/as-wasi.ts:109](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L109)* Build a new descriptor from a raw WASI file descriptor ##### Parameters: Name | Type | Description | ------ | ------ | ------ | `rawfd` | fd | a raw file descriptor | **Returns:** [Descriptor](#classesdescriptormd) ### Accessors #### rawfd • get **rawfd**(): fd *Defined in [assembly/as-wasi.ts:119](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L119)* **Returns:** fd ___ #### Invalid • `Static`get **Invalid**(): [Descriptor](#classesdescriptormd) *Defined in [assembly/as-wasi.ts:94](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L94)* An invalid file descriptor, that can represent an error **Returns:** [Descriptor](#classesdescriptormd) ___ #### Stderr • `Static`get **Stderr**(): [Descriptor](#classesdescriptormd) *Defined in [assembly/as-wasi.ts:109](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L109)* The standard error **Returns:** [Descriptor](#classesdescriptormd) ___ #### Stdin • `Static`get **Stdin**(): [Descriptor](#classesdescriptormd) *Defined in [assembly/as-wasi.ts:99](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L99)* The standard input **Returns:** [Descriptor](#classesdescriptormd) ___ #### Stdout • `Static`get **Stdout**(): [Descriptor](#classesdescriptormd) *Defined in [assembly/as-wasi.ts:104](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L104)* The standard output **Returns:** [Descriptor](#classesdescriptormd) ### Methods #### advise ▸ **advise**(`offset`: u64, `len`: u64, `advice`: advice): bool *Defined in [assembly/as-wasi.ts:130](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L130)* Hint at how the data accessible via the descriptor will be used **`offset`** offset **`len`** length **`advice`** `advice.{NORMAL, SEQUENTIAL, RANDOM, WILLNEED, DONTNEED, NOREUSE}` ##### Parameters: Name | Type | ------ | ------ | `offset` | u64 | `len` | u64 | `advice` | advice | **Returns:** bool `true` on success, `false` on error ___ #### allocate ▸ **allocate**(`offset`: u64, `len`: u64): bool *Defined in [assembly/as-wasi.ts:140](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L140)* Preallocate data ##### Parameters: Name | Type | Description | ------ | ------ | ------ | `offset` | u64 | where to start preallocating data in the file | `len` | u64 | bytes to preallocate | **Returns:** bool `true` on success, `false` on error ___ #### close ▸ **close**(): void *Defined in [assembly/as-wasi.ts:283](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L283)* Close a file descriptor **Returns:** void ___ #### dirName ▸ **dirName**(): string *Defined in [assembly/as-wasi.ts:261](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L261)* Return the directory associated to that descriptor **Returns:** string ___ #### fatime ▸ **fatime**(`ts`: f64): bool *Defined in [assembly/as-wasi.ts:207](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L207)* Update the access time **`ts`** timestamp in seconds ##### Parameters: Name | Type | ------ | ------ | `ts` | f64 | **Returns:** bool `true` on success, `false` on error ___ #### fdatasync ▸ **fdatasync**(): bool *Defined in [assembly/as-wasi.ts:148](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L148)* Wait for the data to be written **Returns:** bool `true` on success, `false` on error ___ #### fileType ▸ **fileType**(): filetype *Defined in [assembly/as-wasi.ts:163](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L163)* Return the file type **Returns:** filetype ___ #### fmtime ▸ **fmtime**(`ts`: f64): bool *Defined in [assembly/as-wasi.ts:219](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L219)* Update the modification time **`ts`** timestamp in seconds ##### Parameters: Name | Type | ------ | ------ | `ts` | f64 | **Returns:** bool `true` on success, `false` on error ___ #### fsync ▸ **fsync**(): bool *Defined in [assembly/as-wasi.ts:156](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L156)* Wait for the data and metadata to be written **Returns:** bool `true` on success, `false` on error ___ #### ftruncate ▸ **ftruncate**(`size?`: u64): bool *Defined in [assembly/as-wasi.ts:198](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L198)* Change the size of a file ##### Parameters: Name | Type | Default value | Description | ------ | ------ | ------ | ------ | `size` | u64 | 0 | new size | **Returns:** bool `true` on success, `false` on error ___ #### futimes ▸ **futimes**(`atime`: f64, `mtime`: f64): bool *Defined in [assembly/as-wasi.ts:232](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L232)* Update both the access and the modification times **`atime`** timestamp in seconds **`mtime`** timestamp in seconds ##### Parameters: Name | Type | ------ | ------ | `atime` | f64 | `mtime` | f64 | **Returns:** bool `true` on success, `false` on error ___ #### read ▸ **read**(`data?`: u8[], `chunk_size?`: usize): u8[] \| null *Defined in [assembly/as-wasi.ts:348](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L348)* Read data from a file descriptor ##### Parameters: Name | Type | Default value | Description | ------ | ------ | ------ | ------ | `data` | u8[] | [] | existing array to push data to | `chunk_size` | usize | 4096 | chunk size (default: 4096) | **Returns:** u8[] \| null ___ #### readAll ▸ **readAll**(`data?`: u8[], `chunk_size?`: usize): u8[] \| null *Defined in [assembly/as-wasi.ts:378](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L378)* Read from a file descriptor until the end of the stream ##### Parameters: Name | Type | Default value | Description | ------ | ------ | ------ | ------ | `data` | u8[] | [] | existing array to push data to | `chunk_size` | usize | 4096 | chunk size (default: 4096) | **Returns:** u8[] \| null ___ #### readLine ▸ **readLine**(): string \| null *Defined in [assembly/as-wasi.ts:411](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L411)* Read a line of text from a file descriptor **Returns:** string \| null ___ #### readString ▸ **readString**(`chunk_size?`: usize): string \| null *Defined in [assembly/as-wasi.ts:450](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L450)* Read an UTF8 string from a file descriptor, convert it to a native string ##### Parameters: Name | Type | Default value | Description | ------ | ------ | ------ | ------ | `chunk_size` | usize | 4096 | chunk size (default: 4096) | **Returns:** string \| null ___ #### seek ▸ **seek**(`off`: u64, `w`: whence): bool *Defined in [assembly/as-wasi.ts:464](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L464)* Seek into a stream **`off`** offset **`w`** the position relative to which to set the offset of the file descriptor. ##### Parameters: Name | Type | ------ | ------ | `off` | u64 | `w` | whence | **Returns:** bool ___ #### setFlags ▸ **setFlags**(`flags`: fdflags): bool *Defined in [assembly/as-wasi.ts:177](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L177)* Set WASI flags for that descriptor **`params`** flags: one or more of `fdflags.{APPEND, DSYNC, NONBLOCK, RSYNC, SYNC}` ##### Parameters: Name | Type | ------ | ------ | `flags` | fdflags | **Returns:** bool `true` on success, `false` on error ___ #### stat ▸ **stat**(): [FileStat](#classesfilestatmd) *Defined in [assembly/as-wasi.ts:185](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L185)* Retrieve information about a descriptor **Returns:** [FileStat](#classesfilestatmd) a `FileStat` object` ___ #### tell ▸ **tell**(): u64 *Defined in [assembly/as-wasi.ts:475](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L475)* Return the current offset in the stream **Returns:** u64 offset ___ #### touch ▸ **touch**(): bool *Defined in [assembly/as-wasi.ts:247](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L247)* Update the timestamp of the object represented by the descriptor **Returns:** bool `true` on success, `false` on error ___ #### write ▸ **write**(`data`: u8[]): void *Defined in [assembly/as-wasi.ts:291](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L291)* Write data to a file descriptor ##### Parameters: Name | Type | Description | ------ | ------ | ------ | `data` | u8[] | data | **Returns:** void ___ #### writeString ▸ **writeString**(`s`: string, `newline?`: bool): void *Defined in [assembly/as-wasi.ts:309](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L309)* Write a string to a file descriptor, after encoding it to UTF8 ##### Parameters: Name | Type | Default value | Description | ------ | ------ | ------ | ------ | `s` | string | - | string | `newline` | bool | false | `true` to add a newline after the string | **Returns:** void ___ #### writeStringLn ▸ **writeStringLn**(`s`: string): void *Defined in [assembly/as-wasi.ts:328](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L328)* Write a string to a file descriptor, after encoding it to UTF8, with a newline ##### Parameters: Name | Type | Description | ------ | ------ | ------ | `s` | string | string | **Returns:** void **[as-wasi](#readmemd)** > [Globals](#readmemd) / Environ ## Class: Environ ### Hierarchy * **Environ** ### Index #### Constructors * [constructor](#constructor) #### Properties * [env](#env) #### Accessors * [all](#all) #### Methods * [all](#all) * [get](#get) ### Constructors #### constructor \+ **new Environ**(): [Environ](#classesenvironmd) *Defined in [assembly/as-wasi.ts:930](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L930)* **Returns:** [Environ](#classesenvironmd) ### Properties #### env • **env**: Array\<[EnvironEntry](#classesenvironentrymd)> *Defined in [assembly/as-wasi.ts:930](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L930)* ### Accessors #### all • `Static`get **all**(): Array\<[EnvironEntry](#classesenvironentrymd)> *Defined in [assembly/as-wasi.ts:960](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L960)* Return all environment variables **Returns:** Array\<[EnvironEntry](#classesenvironentrymd)> ### Methods #### all ▸ **all**(): Array\<[EnvironEntry](#classesenvironentrymd)> *Defined in [assembly/as-wasi.ts:968](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L968)* Return all environment variables **Returns:** Array\<[EnvironEntry](#classesenvironentrymd)> ___ #### get ▸ **get**(`key`: string): string \| null *Defined in [assembly/as-wasi.ts:976](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L976)* Return the value for an environment variable ##### Parameters: Name | Type | Description | ------ | ------ | ------ | `key` | string | environment variable name | **Returns:** string \| null **[as-wasi](#readmemd)** > [Globals](#readmemd) / EnvironEntry ## Class: EnvironEntry ### Hierarchy * **EnvironEntry** ### Index #### Constructors * [constructor](#constructor) #### Properties * [key](#key) * [value](#value) ### Constructors #### constructor \+ **new EnvironEntry**(`key`: string, `value`: string): [EnvironEntry](#classesenvironentrymd) *Defined in [assembly/as-wasi.ts:925](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L925)* ##### Parameters: Name | Type | ------ | ------ | `key` | string | `value` | string | **Returns:** [EnvironEntry](#classesenvironentrymd) ### Properties #### key • `Readonly` **key**: string *Defined in [assembly/as-wasi.ts:926](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L926)* ___ #### value • `Readonly` **value**: string *Defined in [assembly/as-wasi.ts:926](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L926)* **[as-wasi](#readmemd)** > [Globals](#readmemd) / FileStat ## Class: FileStat Portable information about a file ### Hierarchy * **FileStat** ### Index #### Constructors * [constructor](#constructor) #### Properties * [access\_time](#access_time) * [creation\_time](#creation_time) * [file\_size](#file_size) * [file\_type](#file_type) * [modification\_time](#modification_time) ### Constructors #### constructor \+ **new FileStat**(`st_buf`: usize): [FileStat](#classesfilestatmd) *Defined in [assembly/as-wasi.ts:75](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L75)* ##### Parameters: Name | Type | ------ | ------ | `st_buf` | usize | **Returns:** [FileStat](#classesfilestatmd) ### Properties #### access\_time • **access\_time**: f64 *Defined in [assembly/as-wasi.ts:73](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L73)* ___ #### creation\_time • **creation\_time**: f64 *Defined in [assembly/as-wasi.ts:75](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L75)* ___ #### file\_size • **file\_size**: filesize *Defined in [assembly/as-wasi.ts:72](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L72)* ___ #### file\_type • **file\_type**: filetype *Defined in [assembly/as-wasi.ts:71](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L71)* ___ #### modification\_time • **modification\_time**: f64 *Defined in [assembly/as-wasi.ts:74](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L74)* **[as-wasi](#readmemd)** > [Globals](#readmemd) / FileSystem ## Class: FileSystem A class to access a filesystem ### Hierarchy * **FileSystem** ### Index #### Methods * [dirfdForPath](#dirfdforpath) * [exists](#exists) * [link](#link) * [lstat](#lstat) * [mkdir](#mkdir) * [open](#open) * [readdir](#readdir) * [rename](#rename) * [rmdir](#rmdir) * [stat](#stat) * [symlink](#symlink) * [unlink](#unlink) ### Methods #### dirfdForPath ▸ `Static` `Protected`**dirfdForPath**(`path`: string): fd *Defined in [assembly/as-wasi.ts:815](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L815)* ##### Parameters: Name | Type | ------ | ------ | `path` | string | **Returns:** fd ___ #### exists ▸ `Static`**exists**(`path`: string): bool *Defined in [assembly/as-wasi.ts:579](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L579)* Check if a file exists at a given path **`path`** path ##### Parameters: Name | Type | ------ | ------ | `path` | string | **Returns:** bool `true` on success, `false` on failure ___ #### link ▸ `Static`**link**(`old_path`: string, `new_path`: string): bool *Defined in [assembly/as-wasi.ts:602](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L602)* Create a hard link **`old_path`** old path **`new_path`** new path ##### Parameters: Name | Type | ------ | ------ | `old_path` | string | `new_path` | string | **Returns:** bool `true` on success, `false` on failure ___ #### lstat ▸ `Static`**lstat**(`path`: string): [FileStat](#classesfilestatmd) *Defined in [assembly/as-wasi.ts:718](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L718)* Retrieve information about a file or a symbolic link **`path`** path ##### Parameters: Name | Type | ------ | ------ | `path` | string | **Returns:** [FileStat](#classesfilestatmd) a `FileStat` object ___ #### mkdir ▸ `Static`**mkdir**(`path`: string): bool *Defined in [assembly/as-wasi.ts:562](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L562)* Create a new directory **`path`** path ##### Parameters: Name | Type | ------ | ------ | `path` | string | **Returns:** bool `true` on success, `false` on failure ___ #### open ▸ `Static`**open**(`path`: string, `flags?`: string): [Descriptor](#classesdescriptormd) \| null *Defined in [assembly/as-wasi.ts:495](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L495)* Open a path **`path`** path **`flags`** r, r+, w, wx, w+ or xw+ ##### Parameters: Name | Type | Default value | ------ | ------ | ------ | `path` | string | - | `flags` | string | "r" | **Returns:** [Descriptor](#classesdescriptormd) \| null a descriptor ___ #### readdir ▸ `Static`**readdir**(`path`: string): Array\ \| null *Defined in [assembly/as-wasi.ts:772](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L772)* Get the content of a directory ##### Parameters: Name | Type | Description | ------ | ------ | ------ | `path` | string | the directory path | **Returns:** Array\ \| null An array of file names ___ #### rename ▸ `Static`**rename**(`old_path`: string, `new_path`: string): bool *Defined in [assembly/as-wasi.ts:744](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L744)* Rename a file **`old_path`** old path **`new_path`** new path ##### Parameters: Name | Type | ------ | ------ | `old_path` | string | `new_path` | string | **Returns:** bool `true` on success, `false` on failure ___ #### rmdir ▸ `Static`**rmdir**(`path`: string): bool *Defined in [assembly/as-wasi.ts:676](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L676)* Remove a directory **`path`** path ##### Parameters: Name | Type | ------ | ------ | `path` | string | **Returns:** bool `true` on success, `false` on failure ___ #### stat ▸ `Static`**stat**(`path`: string): [FileStat](#classesfilestatmd) *Defined in [assembly/as-wasi.ts:693](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L693)* Retrieve information about a file **`path`** path ##### Parameters: Name | Type | ------ | ------ | `path` | string | **Returns:** [FileStat](#classesfilestatmd) a `FileStat` object ___ #### symlink ▸ `Static`**symlink**(`old_path`: string, `new_path`: string): bool *Defined in [assembly/as-wasi.ts:633](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L633)* Create a symbolic link **`old_path`** old path **`new_path`** new path ##### Parameters: Name | Type | ------ | ------ | `old_path` | string | `new_path` | string | **Returns:** bool `true` on success, `false` on failure ___ #### unlink ▸ `Static`**unlink**(`path`: string): bool *Defined in [assembly/as-wasi.ts:659](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L659)* Unlink a file **`path`** path ##### Parameters: Name | Type | ------ | ------ | `path` | string | **Returns:** bool `true` on success, `false` on failure **[as-wasi](#readmemd)** > [Globals](#readmemd) / Performance ## Class: Performance ### Hierarchy * **Performance** ### Index #### Methods * [now](#now) ### Methods #### now ▸ `Static`**now**(): f64 *Defined in [assembly/as-wasi.ts:905](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L905)* **Returns:** f64 **[as-wasi](#readmemd)** > [Globals](#readmemd) / Process ## Class: Process ### Hierarchy * **Process** ### Index #### Methods * [exit](#exit) ### Methods #### exit ▸ `Static`**exit**(`status`: u32): void *Defined in [assembly/as-wasi.ts:920](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L920)* Cleanly terminate the current process ##### Parameters: Name | Type | Description | ------ | ------ | ------ | `status` | u32 | exit code | **Returns:** void **[as-wasi](#readmemd)** > [Globals](#readmemd) / Random ## Class: Random ### Hierarchy * **Random** ### Index #### Methods * [randomBytes](#randombytes) * [randomFill](#randomfill) ### Methods #### randomBytes ▸ `Static`**randomBytes**(`len`: usize): Uint8Array *Defined in [assembly/as-wasi.ts:884](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L884)* Return an array of random bytes ##### Parameters: Name | Type | Description | ------ | ------ | ------ | `len` | usize | length | **Returns:** Uint8Array ___ #### randomFill ▸ `Static`**randomFill**(`buffer`: ArrayBuffer): void *Defined in [assembly/as-wasi.ts:867](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L867)* Fill a buffer with random data ##### Parameters: Name | Type | Description | ------ | ------ | ------ | `buffer` | ArrayBuffer | An array buffer | **Returns:** void **[as-wasi](#readmemd)** > [Globals](#readmemd) / StringUtils ## Class: StringUtils ### Hierarchy * **StringUtils** ### Index #### Methods * [fromCString](#fromcstring) ### Methods #### fromCString ▸ `Static`**fromCString**(`cstring`: usize): string *Defined in [assembly/as-wasi.ts:1091](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L1091)* Returns a native string from a zero-terminated C string ##### Parameters: Name | Type | ------ | ------ | `cstring` | usize | **Returns:** string native string **[as-wasi](#readmemd)** > [Globals](#readmemd) / Time ## Class: Time ### Hierarchy * **Time** ### Index #### Properties * [MILLISECOND](#millisecond) * [NANOSECOND](#nanosecond) * [SECOND](#second) #### Methods * [sleep](#sleep) ### Properties #### MILLISECOND ▪ `Static` **MILLISECOND**: i32 = Time.NANOSECOND * 1000000 *Defined in [assembly/as-wasi.ts:1046](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L1046)* ___ #### NANOSECOND ▪ `Static` **NANOSECOND**: i32 = 1 *Defined in [assembly/as-wasi.ts:1045](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L1045)* ___ #### SECOND ▪ `Static` **SECOND**: i32 = Time.MILLISECOND * 1000 *Defined in [assembly/as-wasi.ts:1047](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L1047)* ### Methods #### sleep ▸ `Static`**sleep**(`nanoseconds`: i32): void *Defined in [assembly/as-wasi.ts:1051](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L1051)* ##### Parameters: Name | Type | ------ | ------ | `nanoseconds` | i32 | **Returns:** void **[as-wasi](#readmemd)** > [Globals](#readmemd) / WASIError ## Class: WASIError A WASI error ### Hierarchy * Error ↳ **WASIError** ### Index #### Constructors * [constructor](#constructor) #### Properties * [message](#message) * [name](#name) * [stack](#stack) #### Methods * [toString](#tostring) ### Constructors #### constructor \+ **new WASIError**(`message?`: string): [WASIError](#classeswasierrormd) *Overrides void* *Defined in [assembly/as-wasi.ts:60](https://github.com/jedisct1/as-wasi/blob/e1dfc1b/assembly/as-wasi.ts#L60)* ##### Parameters: Name | Type | Default value | ------ | ------ | ------ | `message` | string | "" | **Returns:** [WASIError](#classeswasierrormd) ### Properties #### message • **message**: string *Inherited from [WASIError](#classeswasierrormd).[message](#message)* *Defined in node_modules/assemblyscript/std/assembly/index.d.ts:1718* Message provided on construction. ___ #### name • **name**: string *Inherited from [WASIError](#classeswasierrormd).[name](#name)* *Defined in node_modules/assemblyscript/std/assembly/index.d.ts:1715* Error name. ___ #### stack • `Optional` **stack**: undefined \| string *Inherited from [WASIError](#classeswasierrormd).[stack](#stack)* *Defined in node_modules/assemblyscript/std/assembly/index.d.ts:1721* Stack trace. ### Methods #### toString ▸ **toString**(): string *Inherited from [WASIError](#classeswasierrormd).[toString](#tostring)* *Defined in node_modules/assemblyscript/std/assembly/index.d.ts:1727* Method returns a string representing the specified Error class. **Returns:** string