stacktrace.js v2.0 is out, featuring ES6 support, better stack frames, and more!
To appreciate the value of Jon Stenerson’s book, it is first necessary to understand the distinct but deeply intertwined concepts it covers: Industrial Automation and Process Control. What is Industrial Automation?
Industrial automation refers to the use of digital logic, control systems, and mechanized equipment to execute industrial processes with minimal human intervention. It replaces or augments manual, repetitive tasks with technological systems that drastically improve speed, precision, and consistency. Key elements of industrial automation include:
Industrial Automation and Process Control: A Deep Dive into Jon Stenerson's Textbook
Industrial processes—such as those in chemical plants, oil refineries, and food processing facilities—rely heavily on process control to regulate continuous variables:
This article explores the core concepts of industrial automation, outlines the structure and impact of Stenerson's highly regarded work, and provides guidance on accessing digital or physical copies of this essential educational resource.
🔍 Understanding Industrial Automation and Process Control
Industrial automation has emerged as a pivotal aspect of modern manufacturing and industrial operations. In today's competitive global economy, optimizing processes through automation not only enhances efficiency but also ensures safety, reliability, and sustainability. To appreciate the value of Jon Stenerson’s book,
The use of hydraulics and pneumatics to generate, control, and transmit power in heavy machinery.
More than meets the eye
5 tools in 1!
stacktrace.js - instrument your code and generate stack traces
stacktrace-gps - turn partial code location into precise code location
Industrial Automation And Process Control Jon Stenerson Pdf Page
In version 1.x, We've switched from a synchronous API to an asynchronous one using Promises because synchronous ajax calls are deprecated and frowned upon due to performance implications.
All methods now return stackframes. This Object representation is modeled closely after StackFrame representations in Gecko and V8. All you have to do to get stacktrace.js v0.x behavior is call .toString() on a stackframe.
Use Case: Give me a trace from wherever I am right now
var error = new Error('Boom');
printStackTrace({e: error});
==> Array[String]
v1.x:
var error = new Error('Boom');
StackTrace.fromError(error).then(callback).catch(errback);
==> Promise(Array[StackFrame], Error);
If this is all you need, you don't even need the full stacktrace.js library! Just use error-stack-parser!
ErrorStackParser.parse(new Error('boom'));
Use Case: Give me a trace anytime this function is called
Instrumenting now takes Function references instead of Strings.
v0.x:
function interestingFn() {...};
var p = new printStackTrace.implementation();
p.instrumentFunction(this, 'interestingFn', logStackTrace);
==> Function (instrumented)
p.deinstrumentFunction(this, 'interestingFn');
==> Function (original)
v1.x:
function interestingFn() {...};
StackTrace.instrument(interestingFn, callback, errback);
==> Function (instrumented)
StackTrace.deinstrument(interestingFn);
==> Function (original)
Industrial Automation And Process Control Jon Stenerson Pdf Page
.parseError()
Error: Error message
at baz (http://url.com/file.js:10:7)
at bar (http://url.com/file.js:7:17)
at foo (http://url.com/file.js:4:17)
at http://url.com/file.js:13:21
Parsed Error
.get()
function foo() {
console.log('foo');
bar();
}
function bar() {
baz();
}
function baz() {
function showTrace(stack) {
var event = new CustomEvent('st:try-show', {detail: stack});
document.body.dispatchEvent(event);
}
function showError(error) {
var event = new CustomEvent('st:try-error', {detail: error});
document.body.dispatchEvent(event);
}
StackTrace.get()
.then(showTrace)
.catch(showError);
}
foo();
StackTrace output
Industrial Automation And Process Control Jon Stenerson Pdf Page
To appreciate the value of Jon Stenerson’s book, it is first necessary to understand the distinct but deeply intertwined concepts it covers: Industrial Automation and Process Control. What is Industrial Automation?
Industrial automation refers to the use of digital logic, control systems, and mechanized equipment to execute industrial processes with minimal human intervention. It replaces or augments manual, repetitive tasks with technological systems that drastically improve speed, precision, and consistency. Key elements of industrial automation include:
Industrial Automation and Process Control: A Deep Dive into Jon Stenerson's Textbook
Managed in storage tanks to avoid overflows or dry running pumps. 📖 Who is Jon Stenerson?
Industrial processes—such as those in chemical plants, oil refineries, and food processing facilities—rely heavily on process control to regulate continuous variables:
This article explores the core concepts of industrial automation, outlines the structure and impact of Stenerson's highly regarded work, and provides guidance on accessing digital or physical copies of this essential educational resource.
🔍 Understanding Industrial Automation and Process Control
Industrial automation has emerged as a pivotal aspect of modern manufacturing and industrial operations. In today's competitive global economy, optimizing processes through automation not only enhances efficiency but also ensures safety, reliability, and sustainability.
The use of hydraulics and pneumatics to generate, control, and transmit power in heavy machinery.
Industrial Automation And Process Control Jon Stenerson Pdf Page
Turn partial code location into precise code location
This library accepts a code location (in the form of a StackFrame) and returns a new StackFrame with a more accurate location (using source maps) and guessed function names.
Usage
var stackframe = new StackFrame({fileName: 'http://localhost:3000/file.min.js', lineNumber: 1, columnNumber: 3284});
var callback = function myCallback(foundFunctionName) { console.log(foundFunctionName); };
// Such meta. Wow
var errback = function myErrback(error) { console.log(StackTrace.fromError(error)); };
var gps = new StackTraceGPS();
// Pinpoint actual function name and source-mapped location
gps.pinpoint(stackframe).then(callback, errback);
//===> Promise(StackFrame({functionName: 'fun', fileName: 'file.js', lineNumber: 203, columnNumber: 9}), Error)
// Better location/name information from source maps
gps.getMappedLocation(stackframe).then(callback, errback);
//===> Promise(StackFrame({fileName: 'file.js', lineNumber: 203, columnNumber: 9}), Error)
// Get function name from location information
gps.findFunctionName(stackframe).then(callback, errback);
//===> Promise(StackFrame({functionName: 'fun', fileName: 'http://localhost:3000/file.min.js', lineNumber: 1, columnNumber: 3284}), Error)
Industrial Automation And Process Control Jon Stenerson Pdf Page
Extract meaning from JS Errors
Simple, cross-browser Error parser. This library parses and extracts function names, URLs, line numbers, and column numbers from the given Error's stack as an Array of StackFrames.
Once you have parsed out StackFrames, you can do much more interesting things. See stacktrace-gps.
Note that in IE9 and earlier, Error objects don't have enough information to extract much of anything. In IE 10, Errors are given a stack once they're thrown.