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denoland-deno/cli/tsc/40_error_stack.js

224 lines
5.8 KiB
JavaScript

// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
((window) => {
// Some of the code here is adapted directly from V8 and licensed under a BSD
// style license available here: https://github.com/v8/v8/blob/24886f2d1c565287d33d71e4109a53bf0b54b75c/LICENSE.v8
const assert = window.__bootstrap.util.assert;
function patchCallSite(callSite, location) {
return {
getThis() {
return callSite.getThis();
},
getTypeName() {
return callSite.getTypeName();
},
getFunction() {
return callSite.getFunction();
},
getFunctionName() {
return callSite.getFunctionName();
},
getMethodName() {
return callSite.getMethodName();
},
getFileName() {
return location.fileName;
},
getLineNumber() {
return location.lineNumber;
},
getColumnNumber() {
return location.columnNumber;
},
getEvalOrigin() {
return callSite.getEvalOrigin();
},
isToplevel() {
return callSite.isToplevel();
},
isEval() {
return callSite.isEval();
},
isNative() {
return callSite.isNative();
},
isConstructor() {
return callSite.isConstructor();
},
isAsync() {
return callSite.isAsync();
},
isPromiseAll() {
return callSite.isPromiseAll();
},
getPromiseIndex() {
return callSite.getPromiseIndex();
},
};
}
// Keep in sync with `cli/fmt_errors.rs`.
function formatLocation(callSite) {
if (callSite.isNative()) {
return "native";
}
let result = "";
const fileName = callSite.getFileName();
if (fileName) {
result += fileName;
} else {
if (callSite.isEval()) {
const evalOrigin = callSite.getEvalOrigin();
assert(evalOrigin != null);
result += `${evalOrigin}, `;
}
result += "<anonymous>";
}
const lineNumber = callSite.getLineNumber();
if (lineNumber != null) {
result += `:${lineNumber}`;
const columnNumber = callSite.getColumnNumber();
if (columnNumber != null) {
result += `:${columnNumber}`;
}
}
return result;
}
// Keep in sync with `cli/fmt_errors.rs`.
function formatCallSite(callSite) {
let result = "";
const functionName = callSite.getFunctionName();
const isTopLevel = callSite.isToplevel();
const isAsync = callSite.isAsync();
const isPromiseAll = callSite.isPromiseAll();
const isConstructor = callSite.isConstructor();
const isMethodCall = !(isTopLevel || isConstructor);
if (isAsync) {
result += "async ";
}
if (isPromiseAll) {
result += `Promise.all (index ${callSite.getPromiseIndex()})`;
return result;
}
if (isMethodCall) {
const typeName = callSite.getTypeName();
const methodName = callSite.getMethodName();
if (functionName) {
if (typeName) {
if (!functionName.startsWith(typeName)) {
result += `${typeName}.`;
}
}
result += functionName;
if (methodName) {
if (!functionName.endsWith(methodName)) {
result += ` [as ${methodName}]`;
}
}
} else {
if (typeName) {
result += `${typeName}.`;
}
if (methodName) {
result += methodName;
} else {
result += "<anonymous>";
}
}
} else if (isConstructor) {
result += "new ";
if (functionName) {
result += functionName;
} else {
result += "<anonymous>";
}
} else if (functionName) {
result += functionName;
} else {
result += formatLocation(callSite);
return result;
}
result += ` (${formatLocation(callSite)})`;
return result;
}
function evaluateCallSite(callSite) {
return {
this: callSite.getThis(),
typeName: callSite.getTypeName(),
function: callSite.getFunction(),
functionName: callSite.getFunctionName(),
methodName: callSite.getMethodName(),
fileName: callSite.getFileName(),
lineNumber: callSite.getLineNumber(),
columnNumber: callSite.getColumnNumber(),
evalOrigin: callSite.getEvalOrigin(),
isToplevel: callSite.isToplevel(),
isEval: callSite.isEval(),
isNative: callSite.isNative(),
isConstructor: callSite.isConstructor(),
isAsync: callSite.isAsync(),
isPromiseAll: callSite.isPromiseAll(),
promiseIndex: callSite.getPromiseIndex(),
};
}
function prepareStackTrace(
error,
callSites,
) {
const mappedCallSites = callSites.map(
(callSite) => {
const fileName = callSite.getFileName();
const lineNumber = callSite.getLineNumber();
const columnNumber = callSite.getColumnNumber();
if (fileName && lineNumber != null && columnNumber != null) {
return patchCallSite(
callSite,
{
fileName,
lineNumber,
columnNumber,
},
);
}
return callSite;
},
);
Object.defineProperties(error, {
__callSiteEvals: { value: [], configurable: true },
});
const formattedCallSites = [];
for (const callSite of mappedCallSites) {
error.__callSiteEvals.push(Object.freeze(evaluateCallSite(callSite)));
formattedCallSites.push(formatCallSite(callSite));
}
Object.freeze(error.__callSiteEvals);
return (
`${error.name}: ${error.message}\n` +
formattedCallSites
.map((s) => ` at ${s}`)
.join("\n")
);
}
function setPrepareStackTrace(ErrorConstructor) {
ErrorConstructor.prepareStackTrace = prepareStackTrace;
}
window.__bootstrap.errorStack = {
setPrepareStackTrace,
};
})(this);