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While very useful on its own (and combined with the passthrough render hooks), this also serves as a proof of concept of using WASI (WebAssembly System Interface) modules in Hugo. This will be marked _experimental_ in the documentation. Not because it will be removed or changed in a dramatic way, but we need to think a little more how to best set up/configure similar services, define where these WASM files gets stored, maybe we can allow user provided WASM files plugins via Hugo Modules mounts etc. See these issues for more context: * gohugoio#12736 * gohugoio#12737 See gohugoio#11927
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,5 @@ | ||
| # TODO1 clean up when done. | ||
| go generate ./gen | ||
| javy compile js/greet.bundle.js -d -o wasm/greet.wasm | ||
| javy compile js/renderkatex.bundle.js -d -o wasm/renderkatex.wasm | ||
| touch warpc_test.go |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,55 @@ | ||
| //go:generate go run main.go | ||
| package main | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "log" | ||
| "os" | ||
| "path/filepath" | ||
| "strings" | ||
|
|
||
| "github.com/evanw/esbuild/pkg/api" | ||
| ) | ||
|
|
||
| var scripts = []string{ | ||
| "greet.js", | ||
| "renderkatex.js", | ||
| } | ||
|
|
||
| func main() { | ||
| for _, script := range scripts { | ||
| filename := filepath.Join("../js", script) | ||
| err := buildJSBundle(filename) | ||
| if err != nil { | ||
| log.Fatal(err) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| func buildJSBundle(filename string) error { | ||
| minify := true | ||
| result := api.Build( | ||
| api.BuildOptions{ | ||
| EntryPoints: []string{filename}, | ||
| Bundle: true, | ||
| MinifyWhitespace: minify, | ||
| MinifyIdentifiers: minify, | ||
| MinifySyntax: minify, | ||
| Target: api.ES2020, | ||
| Outfile: strings.Replace(filename, ".js", ".bundle.js", 1), | ||
| SourceRoot: "../js", | ||
| }) | ||
|
|
||
| if len(result.Errors) > 0 { | ||
| return fmt.Errorf("build failed: %v", result.Errors) | ||
| } | ||
| if len(result.OutputFiles) != 1 { | ||
| return fmt.Errorf("expected 1 output file, got %d", len(result.OutputFiles)) | ||
| } | ||
|
|
||
| of := result.OutputFiles[0] | ||
| if err := os.WriteFile(filepath.FromSlash(of.Path), of.Contents, 0o644); err != nil { | ||
| return fmt.Errorf("write file failed: %v", err) | ||
| } | ||
| return nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,2 @@ | ||
| node_modules/ | ||
| package-lock.json |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,56 @@ | ||
| // Read JSONL from stdin. | ||
| export function readInput(handle) { | ||
| const buffSize = 1024; | ||
| let currentLine = []; | ||
| const buffer = new Uint8Array(buffSize); | ||
|
|
||
| // Read all the available bytes | ||
| while (true) { | ||
| // Stdin file descriptor | ||
| const fd = 0; | ||
| let bytesRead = 0; | ||
| try { | ||
| bytesRead = Javy.IO.readSync(fd, buffer); | ||
| } catch (e) { | ||
| // IO.readSync fails with os error 29 when stdin closes. | ||
| if (e.message.includes('os error 29')) { | ||
| break; | ||
| } | ||
| throw new Error('Error reading from stdin'); | ||
| } | ||
|
|
||
| if (bytesRead < 0) { | ||
| throw new Error('Error reading from stdin'); | ||
| break; | ||
| } | ||
|
|
||
| if (bytesRead === 0) { | ||
| break; | ||
| } | ||
|
|
||
| currentLine = [...currentLine, ...buffer.subarray(0, bytesRead)]; | ||
|
|
||
| // Split array into chunks by newline. | ||
| let i = 0; | ||
| for (let j = 0; i < currentLine.length; i++) { | ||
| if (currentLine[i] === 10) { | ||
| const chunk = currentLine.splice(j, i + 1); | ||
| const arr = new Uint8Array(chunk); | ||
| const json = JSON.parse(new TextDecoder().decode(arr)); | ||
| handle(json); | ||
| j = i + 1; | ||
| } | ||
| } | ||
| // Remove processed data. | ||
| currentLine = currentLine.slice(i); | ||
| } | ||
| } | ||
|
|
||
| // Write JSONL to stdout | ||
| export function writeOutput(output) { | ||
| const encodedOutput = new TextEncoder().encode(JSON.stringify(output) + '\n'); | ||
| const buffer = new Uint8Array(encodedOutput); | ||
| // Stdout file descriptor | ||
| const fd = 1; | ||
| Javy.IO.writeSync(fd, buffer); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,9 @@ | ||
| import { readInput, writeOutput } from './common'; | ||
|
|
||
| const greet = function (input) { | ||
| writeOutput({ header: input.header, data: { greeting: 'Hello ' + input.data.name + '!' } }); | ||
| }; | ||
|
|
||
| console.log('Greet module loaded'); | ||
|
|
||
| readInput(greet); |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,14 @@ | ||
| { | ||
| "name": "js", | ||
| "version": "1.0.0", | ||
| "main": "greet.js", | ||
| "scripts": { | ||
| "test": "echo \"Error: no test specified\" && exit 1" | ||
| }, | ||
| "author": "", | ||
| "license": "ISC", | ||
| "description": "", | ||
| "devDependencies": { | ||
| "katex": "^0.16.11" | ||
| } | ||
| } |
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