/
clientHelpers.go.tmpl
130 lines (119 loc) · 3.45 KB
/
clientHelpers.go.tmpl
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{{define "clientHelpers"}}
{{- $webrpcErrors := .WebrpcErrors -}}
{{- $schemaErrors := .SchemaErrors -}}
{{- $opts := .Opts -}}
const createHTTPRequest = (body: object = {}, headers: object = {}, signal: AbortSignal | null = null): object => {
return {
method: 'POST',
headers: { ...headers, 'Content-Type': 'application/json' },
body: JSON.stringify(body || {}),
signal
}
}
const buildResponse = (res: Response): Promise<any> => {
return res.text().then(text => {
let data
try {
data = JSON.parse(text)
} catch(error) {
let message = ''
if (error instanceof Error) {
message = error.message
}
throw WebrpcBadResponseError.new({
status: res.status,
cause: `JSON.parse(): ${message}: response text: ${text}`},
)
}
if (!res.ok) {
const code: number = (typeof data.code === 'number') ? data.code : 0
throw (webrpcErrorByCode[code] || WebrpcError).new(data)
}
return data
})
}
//
// Errors
//
export class WebrpcError extends Error {
name: string
code: number
message: string
status: number
cause?: string
/** @deprecated Use message instead of msg. Deprecated in webrpc v0.11.0. */
msg: string
constructor(name: string, code: number, message: string, status: number, cause?: string) {
super(message)
this.name = name || 'WebrpcError'
this.code = typeof code === 'number' ? code : 0
this.message = message || `endpoint error ${this.code}`
this.msg = this.message
this.status = typeof status === 'number' ? status : 0
this.cause = cause
Object.setPrototypeOf(this, WebrpcError.prototype)
}
static new(payload: any): WebrpcError {
return new this(payload.error, payload.code, payload.message || payload.msg, payload.status, payload.cause)
}
}
// Webrpc errors
{{ range $_, $error := $webrpcErrors}}
export class {{$error.Name}}Error extends WebrpcError {
constructor(
name: string = '{{$error.Name}}',
code: number = {{$error.Code}},
message: string = '{{$error.Message}}',
status: number = 0,
cause?: string
) {
super(name, code, message, status, cause)
Object.setPrototypeOf(this, {{$error.Name}}Error.prototype)
}
}
{{ end }}
// Schema errors
{{ range $_, $error := $schemaErrors}}
export class {{$error.Name}}Error extends WebrpcError {
constructor(
name: string = '{{$error.Name}}',
code: number = {{$error.Code}},
message: string = '{{$error.Message}}',
status: number = 0,
cause?: string
) {
super(name, code, message, status, cause)
Object.setPrototypeOf(this, {{$error.Name}}Error.prototype)
}
}
{{ end }}
export enum errors {
{{- range $_, $error := $webrpcErrors}}
{{$error.Name}} = '{{$error.Name}}',
{{- end}}
{{- range $_, $error := $schemaErrors}}
{{$error.Name}} = '{{$error.Name}}',
{{- end}}
}
const webrpcErrorByCode: { [code: number]: any } = {
{{- range $_, $error := $webrpcErrors}}
[{{$error.Code}}]: {{$error.Name}}Error,
{{- end }}
{{- range $_, $error := $schemaErrors}}
[{{$error.Code}}]: {{$error.Name}}Error,
{{- end }}
}
export type Fetch = (input: RequestInfo, init?: RequestInit) => Promise<Response>
{{if $opts.streaming}}
export interface WebrpcStreamOptions<T> extends WebrpcOptions {
onMessage: (message: T) => void;
onError: (error: WebrpcError, reconnect: () => void) => void;
onOpen?: () => void;
onClose?: () => void;
}
export interface WebrpcOptions {
headers?: HeadersInit;
signal?: AbortSignal;
}
{{end}}
{{end}}