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Update README and frontend files for improved clarity and functionality
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- Added a note in the README about using Taskfile for project management.
- Removed the crossOrigin attribute from the WebAssembly fetch request in verifier.ts for security compliance.
- Refactored the wasm_exec.js file for consistency in string usage and improved readability.
- Cleaned up whitespace in the SRI generation script to enhance code clarity.
This commit is contained in:
ivan
2025-12-27 22:37:27 -06:00
parent e2c80671fa
commit 0dfbacce37
4 changed files with 195 additions and 115 deletions
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2
README.md
View File

@@ -62,6 +62,8 @@ A software distribution platform for assets built and hosted on Gitea. Built wit
### Installation ### Installation
We use [Taskfile](https://taskfile.dev/) to manage the project.
1. **Build Everything (WASM, Frontend, Backend)**: 1. **Build Everything (WASM, Frontend, Backend)**:
```bash ```bash
go-task all go-task all

1
frontend/src/lib/verifier.ts
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@@ -21,7 +21,6 @@ export async function loadVerifier() {
const result = await WebAssembly.instantiateStreaming( const result = await WebAssembly.instantiateStreaming(
fetch('/verifier/verifier.wasm', { fetch('/verifier/verifier.wasm', {
integrity: 'sha384-fDQVhNAuumlwh5lh1AT6LiSLer1EQYa1G8TEJLCZvKXeUxYi2gn3QoI5YdNFtKW0', integrity: 'sha384-fDQVhNAuumlwh5lh1AT6LiSLer1EQYa1G8TEJLCZvKXeUxYi2gn3QoI5YdNFtKW0',
crossOrigin: 'anonymous'
}), }),
go.importObject go.importObject
); );

301
frontend/static/verifier/wasm_exec.js
View File

@@ -2,22 +2,30 @@
// Use of this source code is governed by a BSD-style // Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file. // license that can be found in the LICENSE file.
"use strict"; 'use strict';
(() => { (() => {
const enosys = () => { const enosys = () => {
const err = new Error("not implemented"); const err = new Error('not implemented');
err.code = "ENOSYS"; err.code = 'ENOSYS';
return err; return err;
}; };
if (!globalThis.fs) { if (!globalThis.fs) {
let outputBuf = ""; let outputBuf = '';
globalThis.fs = { globalThis.fs = {
constants: { O_WRONLY: -1, O_RDWR: -1, O_CREAT: -1, O_TRUNC: -1, O_APPEND: -1, O_EXCL: -1, O_DIRECTORY: -1 }, // unused constants: {
O_WRONLY: -1,
O_RDWR: -1,
O_CREAT: -1,
O_TRUNC: -1,
O_APPEND: -1,
O_EXCL: -1,
O_DIRECTORY: -1,
}, // unused
writeSync(fd, buf) { writeSync(fd, buf) {
outputBuf += decoder.decode(buf); outputBuf += decoder.decode(buf);
const nl = outputBuf.lastIndexOf("\n"); const nl = outputBuf.lastIndexOf('\n');
if (nl != -1) { if (nl != -1) {
console.log(outputBuf.substring(0, nl)); console.log(outputBuf.substring(0, nl));
outputBuf = outputBuf.substring(nl + 1); outputBuf = outputBuf.substring(nl + 1);
@@ -32,81 +40,147 @@
const n = this.writeSync(fd, buf); const n = this.writeSync(fd, buf);
callback(null, n); callback(null, n);
}, },
chmod(path, mode, callback) { callback(enosys()); }, chmod(path, mode, callback) {
chown(path, uid, gid, callback) { callback(enosys()); }, callback(enosys());
close(fd, callback) { callback(enosys()); }, },
fchmod(fd, mode, callback) { callback(enosys()); }, chown(path, uid, gid, callback) {
fchown(fd, uid, gid, callback) { callback(enosys()); }, callback(enosys());
fstat(fd, callback) { callback(enosys()); }, },
fsync(fd, callback) { callback(null); }, close(fd, callback) {
ftruncate(fd, length, callback) { callback(enosys()); }, callback(enosys());
lchown(path, uid, gid, callback) { callback(enosys()); }, },
link(path, link, callback) { callback(enosys()); }, fchmod(fd, mode, callback) {
lstat(path, callback) { callback(enosys()); }, callback(enosys());
mkdir(path, perm, callback) { callback(enosys()); }, },
open(path, flags, mode, callback) { callback(enosys()); }, fchown(fd, uid, gid, callback) {
read(fd, buffer, offset, length, position, callback) { callback(enosys()); }, callback(enosys());
readdir(path, callback) { callback(enosys()); }, },
readlink(path, callback) { callback(enosys()); }, fstat(fd, callback) {
rename(from, to, callback) { callback(enosys()); }, callback(enosys());
rmdir(path, callback) { callback(enosys()); }, },
stat(path, callback) { callback(enosys()); }, fsync(fd, callback) {
symlink(path, link, callback) { callback(enosys()); }, callback(null);
truncate(path, length, callback) { callback(enosys()); }, },
unlink(path, callback) { callback(enosys()); }, ftruncate(fd, length, callback) {
utimes(path, atime, mtime, callback) { callback(enosys()); }, callback(enosys());
},
lchown(path, uid, gid, callback) {
callback(enosys());
},
link(path, link, callback) {
callback(enosys());
},
lstat(path, callback) {
callback(enosys());
},
mkdir(path, perm, callback) {
callback(enosys());
},
open(path, flags, mode, callback) {
callback(enosys());
},
read(fd, buffer, offset, length, position, callback) {
callback(enosys());
},
readdir(path, callback) {
callback(enosys());
},
readlink(path, callback) {
callback(enosys());
},
rename(from, to, callback) {
callback(enosys());
},
rmdir(path, callback) {
callback(enosys());
},
stat(path, callback) {
callback(enosys());
},
symlink(path, link, callback) {
callback(enosys());
},
truncate(path, length, callback) {
callback(enosys());
},
unlink(path, callback) {
callback(enosys());
},
utimes(path, atime, mtime, callback) {
callback(enosys());
},
}; };
} }
if (!globalThis.process) { if (!globalThis.process) {
globalThis.process = { globalThis.process = {
getuid() { return -1; }, getuid() {
getgid() { return -1; }, return -1;
geteuid() { return -1; }, },
getegid() { return -1; }, getgid() {
getgroups() { throw enosys(); }, return -1;
},
geteuid() {
return -1;
},
getegid() {
return -1;
},
getgroups() {
throw enosys();
},
pid: -1, pid: -1,
ppid: -1, ppid: -1,
umask() { throw enosys(); }, umask() {
cwd() { throw enosys(); }, throw enosys();
chdir() { throw enosys(); }, },
} cwd() {
throw enosys();
},
chdir() {
throw enosys();
},
};
} }
if (!globalThis.path) { if (!globalThis.path) {
globalThis.path = { globalThis.path = {
resolve(...pathSegments) { resolve(...pathSegments) {
return pathSegments.join("/"); return pathSegments.join('/');
} },
} };
} }
if (!globalThis.crypto) { if (!globalThis.crypto) {
throw new Error("globalThis.crypto is not available, polyfill required (crypto.getRandomValues only)"); throw new Error(
'globalThis.crypto is not available, polyfill required (crypto.getRandomValues only)'
);
} }
if (!globalThis.performance) { if (!globalThis.performance) {
throw new Error("globalThis.performance is not available, polyfill required (performance.now only)"); throw new Error(
'globalThis.performance is not available, polyfill required (performance.now only)'
);
} }
if (!globalThis.TextEncoder) { if (!globalThis.TextEncoder) {
throw new Error("globalThis.TextEncoder is not available, polyfill required"); throw new Error('globalThis.TextEncoder is not available, polyfill required');
} }
if (!globalThis.TextDecoder) { if (!globalThis.TextDecoder) {
throw new Error("globalThis.TextDecoder is not available, polyfill required"); throw new Error('globalThis.TextDecoder is not available, polyfill required');
} }
const encoder = new TextEncoder("utf-8"); const encoder = new TextEncoder('utf-8');
const decoder = new TextDecoder("utf-8"); const decoder = new TextDecoder('utf-8');
globalThis.Go = class { globalThis.Go = class {
constructor() { constructor() {
this.argv = ["js"]; this.argv = ['js'];
this.env = {}; this.env = {};
this.exit = (code) => { this.exit = (code) => {
if (code !== 0) { if (code !== 0) {
console.warn("exit code:", code); console.warn('exit code:', code);
} }
}; };
this._exitPromise = new Promise((resolve) => { this._exitPromise = new Promise((resolve) => {
@@ -119,17 +193,17 @@
const setInt64 = (addr, v) => { const setInt64 = (addr, v) => {
this.mem.setUint32(addr + 0, v, true); this.mem.setUint32(addr + 0, v, true);
this.mem.setUint32(addr + 4, Math.floor(v / 4294967296), true); this.mem.setUint32(addr + 4, Math.floor(v / 4294967296), true);
} };
const setInt32 = (addr, v) => { const setInt32 = (addr, v) => {
this.mem.setUint32(addr + 0, v, true); this.mem.setUint32(addr + 0, v, true);
} };
const getInt64 = (addr) => { const getInt64 = (addr) => {
const low = this.mem.getUint32(addr + 0, true); const low = this.mem.getUint32(addr + 0, true);
const high = this.mem.getInt32(addr + 4, true); const high = this.mem.getInt32(addr + 4, true);
return low + high * 4294967296; return low + high * 4294967296;
} };
const loadValue = (addr) => { const loadValue = (addr) => {
const f = this.mem.getFloat64(addr, true); const f = this.mem.getFloat64(addr, true);
@@ -142,12 +216,12 @@
const id = this.mem.getUint32(addr, true); const id = this.mem.getUint32(addr, true);
return this._values[id]; return this._values[id];
} };
const storeValue = (addr, v) => { const storeValue = (addr, v) => {
const nanHead = 0x7FF80000; const nanHead = 0x7ff80000;
if (typeof v === "number" && v !== 0) { if (typeof v === 'number' && v !== 0) {
if (isNaN(v)) { if (isNaN(v)) {
this.mem.setUint32(addr + 4, nanHead, true); this.mem.setUint32(addr + 4, nanHead, true);
this.mem.setUint32(addr, 0, true); this.mem.setUint32(addr, 0, true);
@@ -175,30 +249,30 @@
this._goRefCounts[id]++; this._goRefCounts[id]++;
let typeFlag = 0; let typeFlag = 0;
switch (typeof v) { switch (typeof v) {
case "object": case 'object':
if (v !== null) { if (v !== null) {
typeFlag = 1; typeFlag = 1;
} }
break; break;
case "string": case 'string':
typeFlag = 2; typeFlag = 2;
break; break;
case "symbol": case 'symbol':
typeFlag = 3; typeFlag = 3;
break; break;
case "function": case 'function':
typeFlag = 4; typeFlag = 4;
break; break;
} }
this.mem.setUint32(addr + 4, nanHead | typeFlag, true); this.mem.setUint32(addr + 4, nanHead | typeFlag, true);
this.mem.setUint32(addr, id, true); this.mem.setUint32(addr, id, true);
} };
const loadSlice = (addr) => { const loadSlice = (addr) => {
const array = getInt64(addr + 0); const array = getInt64(addr + 0);
const len = getInt64(addr + 8); const len = getInt64(addr + 8);
return new Uint8Array(this._inst.exports.mem.buffer, array, len); return new Uint8Array(this._inst.exports.mem.buffer, array, len);
} };
const loadSliceOfValues = (addr) => { const loadSliceOfValues = (addr) => {
const array = getInt64(addr + 0); const array = getInt64(addr + 0);
@@ -208,18 +282,18 @@
a[i] = loadValue(array + i * 8); a[i] = loadValue(array + i * 8);
} }
return a; return a;
} };
const loadString = (addr) => { const loadString = (addr) => {
const saddr = getInt64(addr + 0); const saddr = getInt64(addr + 0);
const len = getInt64(addr + 8); const len = getInt64(addr + 8);
return decoder.decode(new DataView(this._inst.exports.mem.buffer, saddr, len)); return decoder.decode(new DataView(this._inst.exports.mem.buffer, saddr, len));
} };
const testCallExport = (a, b) => { const testCallExport = (a, b) => {
this._inst.exports.testExport0(); this._inst.exports.testExport0();
return this._inst.exports.testExport(a, b); return this._inst.exports.testExport(a, b);
} };
const timeOrigin = Date.now() - performance.now(); const timeOrigin = Date.now() - performance.now();
this.importObject = { this.importObject = {
@@ -234,7 +308,7 @@
// This changes the SP, thus we have to update the SP used by the imported function. // This changes the SP, thus we have to update the SP used by the imported function.
// func wasmExit(code int32) // func wasmExit(code int32)
"runtime.wasmExit": (sp) => { 'runtime.wasmExit': (sp) => {
sp >>>= 0; sp >>>= 0;
const code = this.mem.getInt32(sp + 8, true); const code = this.mem.getInt32(sp + 8, true);
this.exited = true; this.exited = true;
@@ -247,7 +321,7 @@
}, },
// func wasmWrite(fd uintptr, p unsafe.Pointer, n int32) // func wasmWrite(fd uintptr, p unsafe.Pointer, n int32)
"runtime.wasmWrite": (sp) => { 'runtime.wasmWrite': (sp) => {
sp >>>= 0; sp >>>= 0;
const fd = getInt64(sp + 8); const fd = getInt64(sp + 8);
const p = getInt64(sp + 16); const p = getInt64(sp + 16);
@@ -256,47 +330,50 @@
}, },
// func resetMemoryDataView() // func resetMemoryDataView()
"runtime.resetMemoryDataView": (sp) => { 'runtime.resetMemoryDataView': (sp) => {
sp >>>= 0; sp >>>= 0;
this.mem = new DataView(this._inst.exports.mem.buffer); this.mem = new DataView(this._inst.exports.mem.buffer);
}, },
// func nanotime1() int64 // func nanotime1() int64
"runtime.nanotime1": (sp) => { 'runtime.nanotime1': (sp) => {
sp >>>= 0; sp >>>= 0;
setInt64(sp + 8, (timeOrigin + performance.now()) * 1000000); setInt64(sp + 8, (timeOrigin + performance.now()) * 1000000);
}, },
// func walltime() (sec int64, nsec int32) // func walltime() (sec int64, nsec int32)
"runtime.walltime": (sp) => { 'runtime.walltime': (sp) => {
sp >>>= 0; sp >>>= 0;
const msec = (new Date).getTime(); const msec = new Date().getTime();
setInt64(sp + 8, msec / 1000); setInt64(sp + 8, msec / 1000);
this.mem.setInt32(sp + 16, (msec % 1000) * 1000000, true); this.mem.setInt32(sp + 16, (msec % 1000) * 1000000, true);
}, },
// func scheduleTimeoutEvent(delay int64) int32 // func scheduleTimeoutEvent(delay int64) int32
"runtime.scheduleTimeoutEvent": (sp) => { 'runtime.scheduleTimeoutEvent': (sp) => {
sp >>>= 0; sp >>>= 0;
const id = this._nextCallbackTimeoutID; const id = this._nextCallbackTimeoutID;
this._nextCallbackTimeoutID++; this._nextCallbackTimeoutID++;
this._scheduledTimeouts.set(id, setTimeout( this._scheduledTimeouts.set(
() => { id,
this._resume(); setTimeout(
while (this._scheduledTimeouts.has(id)) { () => {
// for some reason Go failed to register the timeout event, log and try again
// (temporary workaround for https://github.com/golang/go/issues/28975)
console.warn("scheduleTimeoutEvent: missed timeout event");
this._resume(); this._resume();
} while (this._scheduledTimeouts.has(id)) {
}, // for some reason Go failed to register the timeout event, log and try again
getInt64(sp + 8), // (temporary workaround for https://github.com/golang/go/issues/28975)
)); console.warn('scheduleTimeoutEvent: missed timeout event');
this._resume();
}
},
getInt64(sp + 8)
)
);
this.mem.setInt32(sp + 16, id, true); this.mem.setInt32(sp + 16, id, true);
}, },
// func clearTimeoutEvent(id int32) // func clearTimeoutEvent(id int32)
"runtime.clearTimeoutEvent": (sp) => { 'runtime.clearTimeoutEvent': (sp) => {
sp >>>= 0; sp >>>= 0;
const id = this.mem.getInt32(sp + 8, true); const id = this.mem.getInt32(sp + 8, true);
clearTimeout(this._scheduledTimeouts.get(id)); clearTimeout(this._scheduledTimeouts.get(id));
@@ -304,13 +381,13 @@
}, },
// func getRandomData(r []byte) // func getRandomData(r []byte)
"runtime.getRandomData": (sp) => { 'runtime.getRandomData': (sp) => {
sp >>>= 0; sp >>>= 0;
crypto.getRandomValues(loadSlice(sp + 8)); crypto.getRandomValues(loadSlice(sp + 8));
}, },
// func finalizeRef(v ref) // func finalizeRef(v ref)
"syscall/js.finalizeRef": (sp) => { 'syscall/js.finalizeRef': (sp) => {
sp >>>= 0; sp >>>= 0;
const id = this.mem.getUint32(sp + 8, true); const id = this.mem.getUint32(sp + 8, true);
this._goRefCounts[id]--; this._goRefCounts[id]--;
@@ -323,13 +400,13 @@
}, },
// func stringVal(value string) ref // func stringVal(value string) ref
"syscall/js.stringVal": (sp) => { 'syscall/js.stringVal': (sp) => {
sp >>>= 0; sp >>>= 0;
storeValue(sp + 24, loadString(sp + 8)); storeValue(sp + 24, loadString(sp + 8));
}, },
// func valueGet(v ref, p string) ref // func valueGet(v ref, p string) ref
"syscall/js.valueGet": (sp) => { 'syscall/js.valueGet': (sp) => {
sp >>>= 0; sp >>>= 0;
const result = Reflect.get(loadValue(sp + 8), loadString(sp + 16)); const result = Reflect.get(loadValue(sp + 8), loadString(sp + 16));
sp = this._inst.exports.getsp() >>> 0; // see comment above sp = this._inst.exports.getsp() >>> 0; // see comment above
@@ -337,31 +414,31 @@
}, },
// func valueSet(v ref, p string, x ref) // func valueSet(v ref, p string, x ref)
"syscall/js.valueSet": (sp) => { 'syscall/js.valueSet': (sp) => {
sp >>>= 0; sp >>>= 0;
Reflect.set(loadValue(sp + 8), loadString(sp + 16), loadValue(sp + 32)); Reflect.set(loadValue(sp + 8), loadString(sp + 16), loadValue(sp + 32));
}, },
// func valueDelete(v ref, p string) // func valueDelete(v ref, p string)
"syscall/js.valueDelete": (sp) => { 'syscall/js.valueDelete': (sp) => {
sp >>>= 0; sp >>>= 0;
Reflect.deleteProperty(loadValue(sp + 8), loadString(sp + 16)); Reflect.deleteProperty(loadValue(sp + 8), loadString(sp + 16));
}, },
// func valueIndex(v ref, i int) ref // func valueIndex(v ref, i int) ref
"syscall/js.valueIndex": (sp) => { 'syscall/js.valueIndex': (sp) => {
sp >>>= 0; sp >>>= 0;
storeValue(sp + 24, Reflect.get(loadValue(sp + 8), getInt64(sp + 16))); storeValue(sp + 24, Reflect.get(loadValue(sp + 8), getInt64(sp + 16)));
}, },
// valueSetIndex(v ref, i int, x ref) // valueSetIndex(v ref, i int, x ref)
"syscall/js.valueSetIndex": (sp) => { 'syscall/js.valueSetIndex': (sp) => {
sp >>>= 0; sp >>>= 0;
Reflect.set(loadValue(sp + 8), getInt64(sp + 16), loadValue(sp + 24)); Reflect.set(loadValue(sp + 8), getInt64(sp + 16), loadValue(sp + 24));
}, },
// func valueCall(v ref, m string, args []ref) (ref, bool) // func valueCall(v ref, m string, args []ref) (ref, bool)
"syscall/js.valueCall": (sp) => { 'syscall/js.valueCall': (sp) => {
sp >>>= 0; sp >>>= 0;
try { try {
const v = loadValue(sp + 8); const v = loadValue(sp + 8);
@@ -379,7 +456,7 @@
}, },
// func valueInvoke(v ref, args []ref) (ref, bool) // func valueInvoke(v ref, args []ref) (ref, bool)
"syscall/js.valueInvoke": (sp) => { 'syscall/js.valueInvoke': (sp) => {
sp >>>= 0; sp >>>= 0;
try { try {
const v = loadValue(sp + 8); const v = loadValue(sp + 8);
@@ -396,7 +473,7 @@
}, },
// func valueNew(v ref, args []ref) (ref, bool) // func valueNew(v ref, args []ref) (ref, bool)
"syscall/js.valueNew": (sp) => { 'syscall/js.valueNew': (sp) => {
sp >>>= 0; sp >>>= 0;
try { try {
const v = loadValue(sp + 8); const v = loadValue(sp + 8);
@@ -413,13 +490,13 @@
}, },
// func valueLength(v ref) int // func valueLength(v ref) int
"syscall/js.valueLength": (sp) => { 'syscall/js.valueLength': (sp) => {
sp >>>= 0; sp >>>= 0;
setInt64(sp + 16, parseInt(loadValue(sp + 8).length)); setInt64(sp + 16, parseInt(loadValue(sp + 8).length));
}, },
// valuePrepareString(v ref) (ref, int) // valuePrepareString(v ref) (ref, int)
"syscall/js.valuePrepareString": (sp) => { 'syscall/js.valuePrepareString': (sp) => {
sp >>>= 0; sp >>>= 0;
const str = encoder.encode(String(loadValue(sp + 8))); const str = encoder.encode(String(loadValue(sp + 8)));
storeValue(sp + 16, str); storeValue(sp + 16, str);
@@ -427,20 +504,20 @@
}, },
// valueLoadString(v ref, b []byte) // valueLoadString(v ref, b []byte)
"syscall/js.valueLoadString": (sp) => { 'syscall/js.valueLoadString': (sp) => {
sp >>>= 0; sp >>>= 0;
const str = loadValue(sp + 8); const str = loadValue(sp + 8);
loadSlice(sp + 16).set(str); loadSlice(sp + 16).set(str);
}, },
// func valueInstanceOf(v ref, t ref) bool // func valueInstanceOf(v ref, t ref) bool
"syscall/js.valueInstanceOf": (sp) => { 'syscall/js.valueInstanceOf': (sp) => {
sp >>>= 0; sp >>>= 0;
this.mem.setUint8(sp + 24, (loadValue(sp + 8) instanceof loadValue(sp + 16)) ? 1 : 0); this.mem.setUint8(sp + 24, loadValue(sp + 8) instanceof loadValue(sp + 16) ? 1 : 0);
}, },
// func copyBytesToGo(dst []byte, src ref) (int, bool) // func copyBytesToGo(dst []byte, src ref) (int, bool)
"syscall/js.copyBytesToGo": (sp) => { 'syscall/js.copyBytesToGo': (sp) => {
sp >>>= 0; sp >>>= 0;
const dst = loadSlice(sp + 8); const dst = loadSlice(sp + 8);
const src = loadValue(sp + 32); const src = loadValue(sp + 32);
@@ -455,7 +532,7 @@
}, },
// func copyBytesToJS(dst ref, src []byte) (int, bool) // func copyBytesToJS(dst ref, src []byte) (int, bool)
"syscall/js.copyBytesToJS": (sp) => { 'syscall/js.copyBytesToJS': (sp) => {
sp >>>= 0; sp >>>= 0;
const dst = loadValue(sp + 8); const dst = loadValue(sp + 8);
const src = loadSlice(sp + 16); const src = loadSlice(sp + 16);
@@ -469,20 +546,21 @@
this.mem.setUint8(sp + 48, 1); this.mem.setUint8(sp + 48, 1);
}, },
"debug": (value) => { debug: (value) => {
console.log(value); console.log(value);
}, },
} },
}; };
} }
async run(instance) { async run(instance) {
if (!(instance instanceof WebAssembly.Instance)) { if (!(instance instanceof WebAssembly.Instance)) {
throw new Error("Go.run: WebAssembly.Instance expected"); throw new Error('Go.run: WebAssembly.Instance expected');
} }
this._inst = instance; this._inst = instance;
this.mem = new DataView(this._inst.exports.mem.buffer); this.mem = new DataView(this._inst.exports.mem.buffer);
this._values = [ // JS values that Go currently has references to, indexed by reference id this._values = [
// JS values that Go currently has references to, indexed by reference id
NaN, NaN,
0, 0,
null, null,
@@ -492,7 +570,8 @@
this, this,
]; ];
this._goRefCounts = new Array(this._values.length).fill(Infinity); // number of references that Go has to a JS value, indexed by reference id this._goRefCounts = new Array(this._values.length).fill(Infinity); // number of references that Go has to a JS value, indexed by reference id
this._ids = new Map([ // mapping from JS values to reference ids this._ids = new Map([
// mapping from JS values to reference ids
[0, 1], [0, 1],
[null, 2], [null, 2],
[true, 3], [true, 3],
@@ -500,7 +579,7 @@
[globalThis, 5], [globalThis, 5],
[this, 6], [this, 6],
]); ]);
this._idPool = []; // unused ids that have been garbage collected this._idPool = []; // unused ids that have been garbage collected
this.exited = false; // whether the Go program has exited this.exited = false; // whether the Go program has exited
// Pass command line arguments and environment variables to WebAssembly by writing them to the linear memory. // Pass command line arguments and environment variables to WebAssembly by writing them to the linear memory.
@@ -508,7 +587,7 @@
const strPtr = (str) => { const strPtr = (str) => {
const ptr = offset; const ptr = offset;
const bytes = encoder.encode(str + "\0"); const bytes = encoder.encode(str + '\0');
new Uint8Array(this.mem.buffer, offset, bytes.length).set(bytes); new Uint8Array(this.mem.buffer, offset, bytes.length).set(bytes);
offset += bytes.length; offset += bytes.length;
if (offset % 8 !== 0) { if (offset % 8 !== 0) {
@@ -542,7 +621,7 @@
// Keep in sync with cmd/link/internal/ld/data.go:wasmMinDataAddr. // Keep in sync with cmd/link/internal/ld/data.go:wasmMinDataAddr.
const wasmMinDataAddr = 4096 + 8192; const wasmMinDataAddr = 4096 + 8192;
if (offset >= wasmMinDataAddr) { if (offset >= wasmMinDataAddr) {
throw new Error("total length of command line and environment variables exceeds limit"); throw new Error('total length of command line and environment variables exceeds limit');
} }
this._inst.exports.run(argc, argv); this._inst.exports.run(argc, argv);
@@ -554,7 +633,7 @@
_resume() { _resume() {
if (this.exited) { if (this.exited) {
throw new Error("Go program has already exited"); throw new Error('Go program has already exited');
} }
this._inst.exports.resume(); this._inst.exports.resume();
if (this.exited) { if (this.exited) {
@@ -571,5 +650,5 @@
return event.result; return event.result;
}; };
} }
} };
})(); })();