Files
reverse-engineering-anything/src/domain/javascript/javascriptStaticPathResolution.test.ts
T
ShuaixinHuang 633e4ff434 fix(javascript): retain static paths through TypeScript wrappers (#3998)
Normalize erased TypeScript wrappers through existing expression/string owners for static paths, call targets, collection/configuration receivers and global aliases. Preserve binding/mutation guards and explicit unknown targets, with CLI and application-boundary regressions.

Original contribution by @ShuaixinHuang.

Co-authored-by: ShuaixinHuang <1836656514@qq.com>
2026-10-16 01:04:24 +08:00

428 lines
13 KiB
TypeScript

import { posix } from "node:path";
import { fileURLToPath } from "node:url";
import { parseExpression } from "@babel/parser";
import { describe, expect, it } from "vitest";
import { analyzeJavaScriptStaticSource } from "./javascriptStaticAnalysis.js";
import { parserPluginsForPath } from "./javascriptSourceParser.js";
import {
staticPath,
staticPathResolutionContext,
} from "./javascriptStaticAnalysisHelpers.js";
import type { JavaScriptStaticPathContext } from "./javascriptStaticAnalysisTypes.js";
const absoluteParts = [
["/app", "/shared/preload.js"],
["ignored", "/app", "preload.js"],
["/app", "first", "/shared", "nested", "../preload.js"],
["/app", "preload///"],
["/app", "../../.."],
["///"],
["", "/app", "", "preload.js", ""],
];
const anchoredExpressions = [
['path.resolve(__dirname, "preload.cjs")', "preload.cjs"],
['path[`resolve`](__dirname, "preload.js")', "preload.js"],
['path.posix.resolve("ignored", __dirname, "preload.js")', "preload.js"],
['path.resolve("/ignored", __dirname, "preload.js")', "preload.js"],
[
'path.posix.resolve("ignored", dirname(fileURLToPath(import.meta.url)), "preload.js")',
"preload.js",
],
[
'path.resolve("ignored", path.dirname(__filename), "preload.js")',
"preload.js",
],
['path.resolve(__dirname, "../preload.js")', "../preload.js"],
['path.resolve(__dirname, "sub", __dirname, "preload.js")', "preload.js"],
['path.resolve(__dirname, "/shared", "preload.js")', "/shared/preload.js"],
["path.resolve(__dirname)", "."],
['path.posix.resolve(`/app`, `/shared`, "preload.js")', "/shared/preload.js"],
['path.posix.resolve("" + "/app", "preload.js")', "/app/preload.js"],
['__dirname + "/preload.js"', "preload.js"],
['__dirname + "/" + "preload.js"', "preload.js"],
['path.dirname(__filename) + "/lib" + "/preload.js"', "lib/preload.js"],
] as const;
const unknownExpressions = [
"runtimePath as string",
"path.join(__dirname as string, runtimeFile as string) as string",
'path[method](__dirname, "preload.js")',
'path[`join${suffix}`](__dirname, "preload.js")',
'(path[method] as typeof path.join)(__dirname, "preload.js")',
'((useJoin ? path.join : path.resolve) as typeof path.join)(__dirname, "preload.js")',
'fileURLToPath(new (runtimeURL as typeof URL)("./preload.js", import.meta.url))',
"path.resolve()",
"path.posix.resolve()",
'path.resolve("sub", "../preload.js")',
'path.resolve("", "")',
'path.resolve(runtimeBase, "/app/preload.js")',
'path.resolve("/app", runtimeFile)',
'path.resolve(runtimeBase, __dirname, "preload.js")',
"path.resolve(__dirname, runtimeFile)",
'path.resolve(...parts, "/app/preload.js")',
'path.resolve("/app", ...parts)',
'path.resolve(42, "/app/preload.js")',
'path.resolve("/app", null)',
"path.resolve(`/app/${runtimeFile}`)",
'path.win32.resolve("/app", "/shared/preload.js")',
'path.win32.resolve(__dirname, "preload.js")',
'win32.resolve("/app", "preload.js")',
'resolve("/app", "preload.js")',
'__dirname + "preload.js"',
'path.dirname(__filename) + "preload.js"',
];
const pathValueExpressions = [
['"./preload.js" as const', "./preload.js", "module-specifier"],
[
'path.join(__dirname, "preload.js") as string',
"preload.js",
"filesystem-expression",
],
[
'path.join(__dirname as string, "preload.js" as const)',
"preload.js",
"filesystem-expression",
],
[
'path.resolve(__dirname as string, "preload.js" as const)',
"preload.js",
"filesystem-expression",
],
[
'fileURLToPath(new URL("./preload.js", import.meta.url as string) as URL) as string',
"./preload.js",
"filesystem-expression",
],
[
'path.join(path.dirname(__filename as string), "preload.js")',
"preload.js",
"filesystem-expression",
],
[
'path.join(path.dirname(__filename) as string, "preload.js")',
"preload.js",
"filesystem-expression",
],
[
'((__dirname + "/lib") as string) + "/preload.js"',
"lib/preload.js",
"filesystem-expression",
],
['"/app/preload.js"', "/app/preload.js", "filesystem-expression"],
["`/app/preload.js`", "/app/preload.js", "filesystem-expression"],
[
'path.join(`/app`, "preload.js")',
"/app/preload.js",
"filesystem-expression",
],
["`./preload.js`", "./preload.js", "module-specifier"],
] as const;
const pathCallTargetExpressions = [
['(path.join as typeof path.join)(__dirname, "preload.js")', "preload.js"],
['path.join!(__dirname, "preload.js")', "preload.js"],
[
'(path.resolve satisfies typeof path.resolve)(__dirname, "preload.js")',
"preload.js",
],
[
'((path as typeof path).posix as typeof path.posix).resolve("/app", "preload.js")',
"/app/preload.js",
],
[
'(fileURLToPath as typeof fileURLToPath)(new URL("./preload.js", import.meta.url))',
"./preload.js",
],
[
'fileURLToPath(new (URL as typeof URL)("./preload.js", import.meta.url))',
"./preload.js",
],
[
'fileURLToPath(new (url.URL as typeof URL)("./preload.js", import.meta.url))',
"./preload.js",
],
[
'path.join((path.dirname as typeof path.dirname)(__filename), "preload.js")',
"preload.js",
],
[
'path.join(dirname((fileURLToPath as typeof fileURLToPath)(import.meta.url)), "preload.js")',
"preload.js",
],
] as const;
describe("inert JavaScript path resolution", () => {
it.each(pathCallTargetExpressions)(
"preserves exact path values and context through call target %s",
(expression, path) => {
assertPathProjection(expression, path, "filesystem-expression");
},
);
it.each(pathValueExpressions)(
"preserves exact path values and context through %s",
(expression, path, context) => {
assertPathProjection(expression, path, context);
},
);
it.each(absoluteParts)(
"matches the POSIX resolve oracle for %j",
(...parts) => {
assertPathProjection(
`path.posix.resolve(${parts.map((part) => JSON.stringify(part)).join(", ")})`,
posix.resolve(...parts),
"filesystem-expression",
);
},
);
it.each(anchoredExpressions)(
"projects the source anchor in %s",
(expression, path) => {
assertPathProjection(expression, path, "filesystem-expression");
},
);
it.each([
[
'path.join("/app", "/shared/preload.js")',
posix.join("/app", "/shared/preload.js"),
"filesystem-expression",
],
[
'path.posix.join("/app", "preload/")',
posix.join("/app", "preload/"),
"filesystem-expression",
],
[
'path.join("sub", "../preload.js")',
posix.join("sub", "../preload.js"),
"module-specifier",
],
[
'path.join(__dirname, "preload.js")',
"preload.js",
"filesystem-expression",
],
[
'path[`join`](__dirname, "preload.js")',
"preload.js",
"filesystem-expression",
],
[
'path.join(__dirname, "/preload.js")',
"preload.js",
"filesystem-expression",
],
[
'path.join(dirname(fileURLToPath(import.meta.url)), "/lib", "/preload.js")',
"lib/preload.js",
"filesystem-expression",
],
[
'path.join("ignored", __dirname, "preload.js")',
"ignored/preload.js",
"filesystem-expression",
],
[
'path.join(dirname(fileURLToPath(import.meta.url)), "preload.js")',
"preload.js",
"filesystem-expression",
],
['join("sub", "preload.js")', "sub/preload.js", "module-specifier"],
["path.join(__dirname)", ".", "filesystem-expression"],
] as const)("preserves join behavior in %s", (expression, path, context) => {
assertPathProjection(expression, path, context);
});
it.each(unknownExpressions)("keeps unsupported %s unknown", (expression) => {
expect(staticPath(parsePathExpression(expression))).toBeUndefined();
const { analysis, windowExpression, utilityExpression } =
analyzePathConsumers(expression);
expect(analysis.parse_status).toBe("partial");
expect(analysis.parse_error_count).toBe(0);
expect(analysis.role_paths).toEqual([]);
expect(analysis.electron.browser_windows).toEqual([
expect.objectContaining({
preload_path: null,
preload_resolution_context: null,
web_preferences: [
{
name: "preload",
value: { status: "dynamic", value: null, expression },
},
],
location: lineRange(2, 0, windowExpression.length),
}),
]);
expect(analysis.electron.utility_processes).toEqual([
{
module_path: null,
module_resolution_context: null,
module_expression: expression,
service_name: null,
module_key: null,
location: lineRange(3, 0, utilityExpression.length),
},
]);
expect(analysis.limitations).toContain(
"One or more static keys, expressions, or Electron boundary values were dynamic and remain unknown.",
);
});
it("keeps recovered templates with invalid escapes unknown as paths", () => {
const expression = ["`", String.raw`\unicode`, "`"].join("");
const { analysis } = analyzePathConsumers(expression);
expect(analysis.parse_status).toBe("partial");
expect(analysis.parse_error_count).toBe(3);
expect(analysis.role_paths).toEqual([]);
expect(analysis.electron.browser_windows).toMatchObject([
{
preload_path: null,
preload_resolution_context: null,
web_preferences: [
{
name: "preload",
value: { status: "dynamic", value: null, expression },
},
],
},
]);
expect(analysis.electron.utility_processes).toEqual([
expect.objectContaining({
module_path: null,
module_resolution_context: null,
module_expression: expression,
}),
]);
});
it.each([
"path.join()",
'path.join("/app", runtimeFile)',
"path.join(...parts)",
])("preserves unresolved join syntax in %s", (expression) =>
expect(staticPath(parsePathExpression(expression))).toBeUndefined(),
);
});
it.each([
"file:///app/preload%20file.js",
"file:///app/%E2%9C%93.js",
"file:///app/preload.js?query=1#fragment",
])("decodes literal file URL %s as a filesystem expression", (url) => {
assertPathProjection(
`fileURLToPath(${JSON.stringify(url)})`,
fileURLToPath(url, { windows: false }),
"filesystem-expression",
);
});
it.each([
'fileURLToPath("file:///app/%2Fpreload.js")',
'fileURLToPath("file:///app/%5Cpreload.js")',
'fileURLToPath("file:///app/%")',
'fileURLToPath("file:///C:/app/preload.js")',
'fileURLToPath("file://remote/share/preload.js")',
'fileURLToPath("file:///app/preload.js", options)',
"fileURLToPath(selectedUrl)",
])("leaves platform-dependent or invalid %s unknown", (expression) =>
expect(staticPath(parsePathExpression(expression))).toBeUndefined(),
);
const parsePathExpression = (expression: string) =>
parseExpression(expression, {
sourceType: "module",
plugins: parserPluginsForPath("preload.ts"),
});
const analyzePathConsumers = (expression: string) => {
const property = `preload: ${expression}`;
const genericPrefix = "const options = { ";
const windowPrefix = "new BrowserWindow({ webPreferences: { ";
const windowExpression = `${windowPrefix}${property} } })`;
const utilityExpression = `utilityProcess.fork(${expression})`;
return {
property,
genericPrefix,
windowPrefix,
windowExpression,
utilityExpression,
analysis: analyzeJavaScriptStaticSource(
`${genericPrefix}${property} }; const { BrowserWindow, utilityProcess } = require("electron");\n${windowExpression};\n${utilityExpression};`,
),
};
};
const assertPathProjection = (
expression: string,
path: string,
context: JavaScriptStaticPathContext,
) => {
const node = parsePathExpression(expression);
expect(staticPath(node)).toBe(path);
expect(staticPathResolutionContext(node)).toBe(context);
const {
analysis,
property,
genericPrefix,
windowPrefix,
windowExpression,
utilityExpression,
} = analyzePathConsumers(expression);
expect(analysis.parse_status).toBe("complete");
expect(analysis.parse_error_count).toBe(0);
expect(analysis.role_paths).toEqual(
(
[
[1, genericPrefix.length],
[2, windowPrefix.length],
] as const
).map(([line, column]) => ({
role: "preload",
path,
resolution_context: context,
mechanism: "property:preload",
module_key: null,
location: lineRange(line, column, column + property.length),
})),
);
expect(analysis.electron.browser_windows).toEqual([
{
options_status: "object-literal",
web_preferences_status: "object-literal",
web_preferences: [
{
name: "preload",
value: { status: "literal", value: path, expression: null },
},
],
preload_path: path,
preload_resolution_context: context,
module_key: null,
location: lineRange(2, 0, windowExpression.length),
},
]);
expect(analysis.electron.utility_processes).toEqual([
{
module_path: path,
module_resolution_context: context,
module_expression: null,
service_name: null,
module_key: null,
location: lineRange(3, 0, utilityExpression.length),
},
]);
};
const lineRange = (line: number, start: number, end: number) => ({
start: { line, column: start },
end: { line, column: end },
});