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### Improved

Browse Source 
- Fetch chunks on demand now respects network conditions.

### Misc
- Prettified
This commit is contained in:
vorotamoroz
2026-06-15 10:50:25 +01:00
parent 1a1f816872
commit 24bc8404fe
10 changed files with 130 additions and 136 deletions
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utils/check-compatibility.js
+109 -95
View File
@@ -1,14 +1,14 @@
import * as acorn from 'acorn';
import fs from 'fs';
import * as acorn from "acorn";
import fs from "fs";
// Parse command line arguments
const args = process.argv.slice(2);
let file = 'main.js';
let file = "main.js";
let target = 2018;
let ios = null;
// Help menu
if (args.includes('--help') || args.includes('-h')) {
if (args.includes("--help") || args.includes("-h")) {
console.log(`Usage: node utils/check-compatibility.js [options]
Options:
--file <path> Path to the bundle file to check (default: main.js)
@@ -27,13 +27,13 @@ Options:
}
for (let i = 0; i < args.length; i++) {
if (args[i] === '--file' && args[i + 1]) {
if (args[i] === "--file" && args[i + 1]) {
file = args[i + 1];
i++;
} else if (args[i] === '--target' && args[i + 1]) {
} else if (args[i] === "--target" && args[i + 1]) {
target = parseInt(args[i + 1], 10);
i++;
} else if (args[i] === '--ios' && args[i + 1]) {
} else if (args[i] === "--ios" && args[i + 1]) {
ios = parseFloat(args[i + 1]);
i++;
}
@@ -69,22 +69,22 @@ if (ios !== null) {
// Override defaults with explicit command line options if specified
for (let i = 0; i < args.length; i++) {
if (args[i] === '--allow-dynamic-import') allowDynamicImport = true;
else if (args[i] === '--no-allow-dynamic-import') allowDynamicImport = false;
else if (args[i] === '--allow-bigint') allowBigInt = true;
else if (args[i] === '--no-allow-bigint') allowBigInt = false;
else if (args[i] === '--allow-numeric-separator') allowNumericSeparator = true;
else if (args[i] === '--no-allow-numeric-separator') allowNumericSeparator = false;
else if (args[i] === '--allow-class-fields') allowClassFields = true;
else if (args[i] === '--no-allow-class-fields') allowClassFields = false;
else if (args[i] === '--allow-class-static-blocks') allowClassStaticBlocks = true;
else if (args[i] === '--no-allow-class-static-blocks') allowClassStaticBlocks = false;
else if (args[i] === '--allow-regexp-lookbehind') allowRegexpLookbehind = true;
else if (args[i] === '--no-allow-regexp-lookbehind') allowRegexpLookbehind = false;
else if (args[i] === '--allow-regexp-indices') allowRegexpIndices = true;
else if (args[i] === '--no-allow-regexp-indices') allowRegexpIndices = false;
else if (args[i] === '--allow-regexp-v-flag') allowRegexpVFlag = true;
else if (args[i] === '--no-allow-regexp-v-flag') allowRegexpVFlag = false;
if (args[i] === "--allow-dynamic-import") allowDynamicImport = true;
else if (args[i] === "--no-allow-dynamic-import") allowDynamicImport = false;
else if (args[i] === "--allow-bigint") allowBigInt = true;
else if (args[i] === "--no-allow-bigint") allowBigInt = false;
else if (args[i] === "--allow-numeric-separator") allowNumericSeparator = true;
else if (args[i] === "--no-allow-numeric-separator") allowNumericSeparator = false;
else if (args[i] === "--allow-class-fields") allowClassFields = true;
else if (args[i] === "--no-allow-class-fields") allowClassFields = false;
else if (args[i] === "--allow-class-static-blocks") allowClassStaticBlocks = true;
else if (args[i] === "--no-allow-class-static-blocks") allowClassStaticBlocks = false;
else if (args[i] === "--allow-regexp-lookbehind") allowRegexpLookbehind = true;
else if (args[i] === "--no-allow-regexp-lookbehind") allowRegexpLookbehind = false;
else if (args[i] === "--allow-regexp-indices") allowRegexpIndices = true;
else if (args[i] === "--no-allow-regexp-indices") allowRegexpIndices = false;
else if (args[i] === "--allow-regexp-v-flag") allowRegexpVFlag = true;
else if (args[i] === "--no-allow-regexp-v-flag") allowRegexpVFlag = false;
}
if (!fs.existsSync(file)) {
@@ -92,35 +92,35 @@ if (!fs.existsSync(file)) {
process.exit(1);
}
const code = fs.readFileSync(file, 'utf8');
const code = fs.readFileSync(file, "utf8");
let ast;
const targetInfo = ios !== null ? `iOS ${ios}` : `ES${target}`;
console.log(`Parsing '${file}' to inspect compatibility (target ${targetInfo})...`);
console.log(`Rules:
Dynamic Import: ${allowDynamicImport ? 'Allowed' : 'Prohibited'}
BigInt: ${allowBigInt ? 'Allowed' : 'Prohibited'}
Numeric Separators: ${allowNumericSeparator ? 'Allowed' : 'Prohibited'}
Class Fields: ${allowClassFields ? 'Allowed' : 'Prohibited'}
Class Static Block: ${allowClassStaticBlocks ? 'Allowed' : 'Prohibited'}
RegExp Lookbehind: ${allowRegexpLookbehind ? 'Allowed' : 'Prohibited'}
RegExp Indices (d): ${allowRegexpIndices ? 'Allowed' : 'Prohibited'}
RegExp Unicode (v): ${allowRegexpVFlag ? 'Allowed' : 'Prohibited'}
Dynamic Import: ${allowDynamicImport ? "Allowed" : "Prohibited"}
BigInt: ${allowBigInt ? "Allowed" : "Prohibited"}
Numeric Separators: ${allowNumericSeparator ? "Allowed" : "Prohibited"}
Class Fields: ${allowClassFields ? "Allowed" : "Prohibited"}
Class Static Block: ${allowClassStaticBlocks ? "Allowed" : "Prohibited"}
RegExp Lookbehind: ${allowRegexpLookbehind ? "Allowed" : "Prohibited"}
RegExp Indices (d): ${allowRegexpIndices ? "Allowed" : "Prohibited"}
RegExp Unicode (v): ${allowRegexpVFlag ? "Allowed" : "Prohibited"}
`);
try {
ast = acorn.parse(code, { ecmaVersion: 'latest', sourceType: 'script' });
ast = acorn.parse(code, { ecmaVersion: "latest", sourceType: "script" });
} catch (err) {
console.error(`Syntax Error: Failed to parse '${file}' due to a syntax issue:`);
console.error(err.message);
if (err.pos !== undefined) {
const line = code.substring(0, err.pos).split('\n').length;
const line = code.substring(0, err.pos).split("\n").length;
console.error(`Location: line ${line}, character ${err.pos}`);
const start = Math.max(0, err.pos - 50);
const end = Math.min(code.length, err.pos + 50);
console.error('Context around error:');
console.error("Context around error:");
console.error(code.substring(start, end));
console.error(' '.repeat(err.pos - start) + '^');
console.error(" ".repeat(err.pos - start) + "^");
}
process.exit(1);
}
@@ -131,14 +131,14 @@ const violations = [];
function hasLookbehind(pattern) {
let index = 0;
while (true) {
const match = pattern.indexOf('(?<=', index);
const match2 = pattern.indexOf('(?<!', index);
const pos = (match !== -1 && match2 !== -1) ? Math.min(match, match2) : (match !== -1 ? match : match2);
const match = pattern.indexOf("(?<=", index);
const match2 = pattern.indexOf("(?<!", index);
const pos = match !== -1 && match2 !== -1 ? Math.min(match, match2) : match !== -1 ? match : match2;
if (pos === -1) break;
let backslashes = 0;
for (let i = pos - 1; i >= 0; i--) {
if (pattern[i] === '\\') backslashes++;
if (pattern[i] === "\\") backslashes++;
else break;
}
if (backslashes % 2 === 0) {
@@ -150,178 +150,192 @@ function hasLookbehind(pattern) {
}
function checkNode(node) {
if (!node || typeof node !== 'object') return;
if (!node || typeof node !== "object") return;
if (node.type) {
// 1. Optional catch binding (ES2019 / iOS 11.3+)
if (node.type === 'CatchClause' && !node.param) {
if (node.type === "CatchClause" && !node.param) {
if (target < 2019 && ios === null) {
violations.push({
feature: 'Optional catch binding (ES2019 / iOS 11.3+)',
feature: "Optional catch binding (ES2019 / iOS 11.3+)",
pos: node.start,
node
node,
});
} else if (ios !== null && ios < 11.3) {
violations.push({
feature: 'Optional catch binding (iOS 11.3+)',
feature: "Optional catch binding (iOS 11.3+)",
pos: node.start,
node
node,
});
}
}
// 2. Dynamic import (ES2020 / iOS 11.3+)
if (node.type === 'ImportExpression') {
if (node.type === "ImportExpression") {
if (!allowDynamicImport) {
violations.push({
feature: 'Dynamic import (ES2020 / iOS 11.3+)',
feature: "Dynamic import (ES2020 / iOS 11.3+)",
pos: node.start,
node
node,
});
}
}
// 3. import.meta (ES2020 / iOS 11.3+)
if (node.type === 'MetaProperty' && node.meta && node.meta.name === 'import') {
if (node.type === "MetaProperty" && node.meta && node.meta.name === "import") {
if (!allowDynamicImport) {
violations.push({
feature: 'import.meta (ES2020 / iOS 11.3+)',
feature: "import.meta (ES2020 / iOS 11.3+)",
pos: node.start,
node
node,
});
}
}
// 4. Optional chaining (ES2020 / iOS 13.4+)
if (node.type === 'ChainExpression') {
if (node.type === "ChainExpression") {
const isProhibited = ios !== null ? ios < 13.4 : target < 2020;
if (isProhibited) {
violations.push({
feature: 'Optional chaining (ES2020 / iOS 13.4+)',
feature: "Optional chaining (ES2020 / iOS 13.4+)",
pos: node.start,
node
node,
});
}
}
// 5. Nullish coalescing (ES2020 / iOS 13.4+)
if (node.type === 'LogicalExpression' && node.operator === '??') {
if (node.type === "LogicalExpression" && node.operator === "??") {
const isProhibited = ios !== null ? ios < 13.4 : target < 2020;
if (isProhibited) {
violations.push({
feature: 'Nullish coalescing (ES2020 / iOS 13.4+)',
feature: "Nullish coalescing (ES2020 / iOS 13.4+)",
pos: node.start,
node
node,
});
}
}
// 6. BigInt literal (ES2020 / iOS 14.0+)
if (node.type === 'Literal' && node.bigint !== undefined) {
if (node.type === "Literal" && node.bigint !== undefined) {
if (!allowBigInt) {
violations.push({
feature: 'BigInt literal (ES2020 / iOS 14.0+)',
feature: "BigInt literal (ES2020 / iOS 14.0+)",
pos: node.start,
node
node,
});
}
}
// 7. Logical assignment (ES2021 / iOS 14.0+)
if (node.type === 'AssignmentExpression' && ['||=', '&&=', '??='].includes(node.operator)) {
if (node.type === "AssignmentExpression" && ["||=", "&&=", "??="].includes(node.operator)) {
const isProhibited = ios !== null ? ios < 14.0 : target < 2021;
if (isProhibited) {
violations.push({
feature: `Logical assignment operator '${node.operator}' (ES2021 / iOS 14.0+)`,
pos: node.start,
node
node,
});
}
}
// 8. Numeric separators (ES2021 / iOS 14.0+)
if (node.type === 'Literal' && typeof node.value === 'number' && node.raw && node.raw.includes('_')) {
if (node.type === "Literal" && typeof node.value === "number" && node.raw && node.raw.includes("_")) {
if (!allowNumericSeparator) {
violations.push({
feature: 'Numeric separator (ES2021 / iOS 14.0+)',
feature: "Numeric separator (ES2021 / iOS 14.0+)",
pos: node.start,
node
node,
});
}
}
// 9. Class Fields (ES2022 / iOS 14.0+ public, iOS 14.5+ private/static)
if (node.type === 'PropertyDefinition') {
if (node.type === "PropertyDefinition") {
if (!allowClassFields) {
const requiredVersion = node.key.type === 'PrivateIdentifier' || node.static ? 'iOS 14.5+' : 'iOS 14.0+';
const requiredVersion =
node.key.type === "PrivateIdentifier" || node.static ? "iOS 14.5+" : "iOS 14.0+";
violations.push({
feature: `Class field definition '${node.key.name || node.key.value || '#private'}' (ES2022 / ${requiredVersion})`,
feature: `Class field definition '${node.key.name || node.key.value || "#private"}' (ES2022 / ${requiredVersion})`,
pos: node.start,
node
node,
});
}
}
// 10. Class Static Initialization Blocks (ES2022 / iOS 16.4+)
if (node.type === 'StaticBlock') {
if (node.type === "StaticBlock") {
if (!allowClassStaticBlocks) {
violations.push({
feature: 'Class static initialization block (ES2022 / iOS 16.4+)',
feature: "Class static initialization block (ES2022 / iOS 16.4+)",
pos: node.start,
node
node,
});
}
}
// 11. RegExp lookbehind assertions (ES2018 / iOS 16.4+)
if (node.type === 'Literal' && node.regex) {
if (node.type === "Literal" && node.regex) {
if (!allowRegexpLookbehind && hasLookbehind(node.regex.pattern)) {
violations.push({
feature: 'RegExp Lookbehind assertion (iOS 16.4+)',
feature: "RegExp Lookbehind assertion (iOS 16.4+)",
pos: node.start,
node
node,
});
}
if (!allowRegexpIndices && node.regex.flags.includes('d')) {
if (!allowRegexpIndices && node.regex.flags.includes("d")) {
violations.push({
feature: "RegExp 'd' (indices) flag (ES2022 / iOS 15.0+)",
pos: node.start,
node
node,
});
}
if (!allowRegexpVFlag && node.regex.flags.includes('v')) {
if (!allowRegexpVFlag && node.regex.flags.includes("v")) {
violations.push({
feature: "RegExp 'v' (Unicode properties) flag (ES2024 / iOS 17.0+)",
pos: node.start,
node
node,
});
}
}
if ((node.type === 'NewExpression' || node.type === 'CallExpression') && node.callee && node.callee.name === 'RegExp') {
if (!allowRegexpLookbehind && node.arguments[0] && node.arguments[0].type === 'Literal' && typeof node.arguments[0].value === 'string') {
if (
(node.type === "NewExpression" || node.type === "CallExpression") &&
node.callee &&
node.callee.name === "RegExp"
) {
if (
!allowRegexpLookbehind &&
node.arguments[0] &&
node.arguments[0].type === "Literal" &&
typeof node.arguments[0].value === "string"
) {
if (hasLookbehind(node.arguments[0].value)) {
violations.push({
feature: 'RegExp Lookbehind assertion (iOS 16.4+)',
feature: "RegExp Lookbehind assertion (iOS 16.4+)",
pos: node.start,
node
node,
});
}
}
if (node.arguments[1] && node.arguments[1].type === 'Literal' && typeof node.arguments[1].value === 'string') {
if (
node.arguments[1] &&
node.arguments[1].type === "Literal" &&
typeof node.arguments[1].value === "string"
) {
const flags = node.arguments[1].value;
if (!allowRegexpIndices && flags.includes('d')) {
if (!allowRegexpIndices && flags.includes("d")) {
violations.push({
feature: "RegExp 'd' (indices) flag (ES2022 / iOS 15.0+)",
pos: node.start,
node
node,
});
}
if (!allowRegexpVFlag && flags.includes('v')) {
if (!allowRegexpVFlag && flags.includes("v")) {
violations.push({
feature: "RegExp 'v' (Unicode properties) flag (ES2024 / iOS 17.0+)",
pos: node.start,
node
node,
});
}
}
@@ -329,13 +343,13 @@ function checkNode(node) {
}
for (const key in node) {
if (key === 'loc' || key === 'start' || key === 'end') continue;
if (key === "loc" || key === "start" || key === "end") continue;
const val = node[key];
if (Array.isArray(val)) {
for (const child of val) {
checkNode(child);
}
} else if (val && typeof val === 'object') {
} else if (val && typeof val === "object") {
checkNode(val);
}
}
@@ -347,14 +361,14 @@ checkNode(ast);
if (violations.length > 0) {
console.error(`\nCompatibility Check Failed: Found ${violations.length} prohibited features.`);
violations.forEach((v, index) => {
const line = code.substring(0, v.pos).split('\n').length;
const line = code.substring(0, v.pos).split("\n").length;
console.error(`\n[${index + 1}] Prohibited feature: ${v.feature}`);
console.error(`Location: line ${line}, character ${v.pos}`);
const start = Math.max(0, v.pos - 50);
const end = Math.min(code.length, v.pos + 50);
console.error('Context around feature:');
console.error("Context around feature:");
console.error(code.substring(start, end));
console.error(' '.repeat(v.pos - start) + '^');
console.error(" ".repeat(v.pos - start) + "^");
});
process.exit(1);
}