The 50-day plan

About an hour a day: your reviews first (a few minutes), then four 15-minute chapters. Days 1–30 are Track A in TypeScript. Days 31–50 are Track B, where you learn Rust and rebuild everything.

Loading your progress…

Day 1Part I0/4
- 1Functions: naming a piece of work
- 2Arrays: a row of numbered boxes
- 3Objects: things with named parts
- 4References: two names, one object
Day 2Part I0/4
- 5Functions as values
- 6Closures: functions that remember
- 7Classes, methods and this
- 8Map and Set
Day 3Part I0/4
- 9Recursion and the call stack
- 10Strings up close
- 11Errors and exceptions
- 12Modules: import and export
Day 4Part I0/4
- 13TypeScript I: types as labels
- 14TypeScript II: unions, narrowing and generics
- 15Testing your code
- 16Bits, bytes and typed arrays
Day 5Part II0/4
- 17Memory is one long array
- 18The CPU and its caches
- 19Cache lines and locality
- 20Prefetching and branch prediction
Day 6Part II0/4
- 21SIMD: one instruction, many numbers
- 22How JavaScript stores numbers and objects
- 23AoS vs SoA, measured
- 24Benchmarking honestly
Day 7Part III0/4
- 25A map of the territory
- 26Meet Drip
- 27Tokens and lexemes
- 28Writing a scanner
Day 8Part III0/4
- 29Numbers, strings, names and keywords
- 30Grammars
- 31Syntax trees
- 32Recursive descent parsing
Day 9Part III0/4
- 33Pratt parsing
- 34Syntax errors and recovery
- 35Evaluating expressions
- 36Statements and state
Day 10Part III0/4
- 37Environments and scope
- 38Control flow
- 39Functions in Drip
- 40Return and the call stack
Day 11Part III0/4
- 41Closures in Drip
- 42Resolving variables
- 43Classes and instances in Drip
- 44Inheritance, and measuring the tree-walker
Day 12Part IV0/4
- 45Why bytecode?
- 46Chunks and a disassembler
- 47A stack-based VM
- 48Compiling expressions
Day 13Part IV0/4
- 49Representing values
- 50Strings and heap objects
- 51Hash tables
- 52String interning
Day 14Part IV0/4
- 53Global variables in the VM
- 54Local variables and stack slots
- 55Jumps: if, while and for
- 56Calls and call frames
Day 15Part IV0/4
- 57Closures and upvalues
- 58Garbage collection: mark and sweep
- 59Classes and methods in the VM
- 60Making the VM fast
Day 16Part V0/4
- 61The V8 pipeline
- 62Parsing JavaScript for real
- 63Shapes in depth
- 64Inline caches
Day 17Part V0/4
- 65Elements kinds
- 66Speculation and deoptimization
- 67Escape analysis in V8
- 68V8’s garbage collector
Day 18Part V0/4
- 69JavaScriptCore and SpiderMonkey
- 70GraalJS and Truffle
- 71Columnar arrays at run time: the research
- 72Watching the engine work
Day 19Part VI0/4
- 73What an IR is for
- 74Three-address code
- 75Basic blocks and control-flow graphs
- 76Dominators
Day 20Part VI0/4
- 77SSA form
- 78Building SSA
- 79Dataflow analysis
- 80Constant folding and propagation
Day 21Part VI0/4
- 81Dead code elimination
- 82Inlining
- 83Loops
- 84Alias analysis
Day 22Part VI0/4
- 85Escape analysis
- 86Type and shape inference
- 87Pass managers
- 88Testing compilers
Day 23Part VII0/4
- 89The architecture of Viscosity
- 90The plugin API
- 91VIR: Viscosity’s IR
- 92Parsing real JavaScript
Day 24Part VII0/4
- 93Lowering JavaScript to VIR
- 94Emitting JavaScript
- 95Round-trip testing the front-end
- 96Finding collections
Day 25Part VII0/4
- 97Record shapes
- 98Access patterns
- 99Proving it safe
- 100What Viscosity refuses to touch
Day 26Part VII0/4
- 101The cost model
- 102Opting in with @viscosity
- 103Generating SoA storage
- 104Rewriting field accesses
Day 27Part VII0/4
- 105Growing collections
- 106Identity and materialization
- 107AoSoA code generation
- 108Hot/cold splitting
Day 28Part VII0/4
- 109Profile-guided optimization
- 110viscosity explain
- 111Benchmarking Viscosity end to end
- 112Differential testing at scale
Day 29Part VIII0/4
- 113A second language: why plugins pay off
- 114A small Python front-end
- 115Lowering Python to VIR
- 116Emitting Python with column storage
Day 30Part VIII0/4
- 117WebAssembly as a target
- 118The research frontier
- 119Shipping Viscosity
- 120Capstone: what you have built
Day 31Part IX0/4
- 121Why Rust? Hello, cargo
- 122Variables, types and mutability
- 123Functions and expressions
- 124Ownership
Day 32Part IX0/4
- 125Borrowing
- 126Slices and strings
- 127Structs and impl
- 128Enums and match
Day 33Part IX0/4
- 129Option and Result
- 130Vec and HashMap
- 131Traits
- 132Generics and trait bounds
Day 34Part IX0/4
- 133Lifetimes
- 134Iterators and closures in Rust
- 135Modules, crates and visibility
- 136Testing in Rust
Day 35Part IX0/4
- 137Box, Rc and RefCell
- 138Arenas and typed indices
- 139Memory layout in Rust
- 140Struct of arrays in Rust by hand
Day 36Part IX0/4
- 141Unsafe Rust
- 142Measuring Rust performance
- 143Rust and WebAssembly
- 144Error handling at scale
Day 37Part X0/4
- 145Planning drip-rs
- 146Tokens as enums
- 147The scanner in Rust
- 148Chunks and opcodes in Rust
Day 38Part X0/4
- 149Values in Rust
- 150The VM loop in Rust
- 151A Pratt compiler in Rust, part 1
- 152A Pratt compiler in Rust, part 2
Day 39Part X0/4
- 153Heap objects in an arena
- 154Strings and interning in Rust
- 155Globals and locals in Rust
- 156Control flow in Rust
Day 40Part X0/4
- 157Functions and call frames in Rust
- 158Closures and upvalues in Rust
- 159A garbage collector in Rust
- 160Classes and instances in Rust
Day 41Part X0/4
- 161Methods and initializers in Rust
- 162Inheritance in Rust
- 163Errors and diagnostics in Rust
- 164Testing against the shared corpus
Day 42Part X0/4
- 165Profiling the Rust VM
- 166Optimizing the Rust VM
- 167Benchmarks: three implementations
- 168What Rust bought us
Day 43Part XI0/4
- 169The Rust workspace
- 170VIR in Rust
- 171The plugin trait
- 172Parsing with oxc
Day 44Part XI0/4
- 173Lowering oxc’s AST to VIR
- 174Emitting JavaScript from Rust
- 175Round-trip tests across engines
- 176Dominators and SSA in Rust
Day 45Part XI0/4
- 177A generic dataflow framework
- 178Collection discovery in Rust
- 179Shape inference in Rust
- 180Escape and alias analysis in Rust
Day 46Part XI0/4
- 181Access patterns in Rust
- 182The cost model in Rust
- 183SoA code generation in Rust
- 184AoSoA and hot/cold in Rust
Day 47Part XI0/4
- 185explain in Rust
- 186PGO in Rust
- 187The Python plugin in Rust
- 188TypeScript vs Rust: differential tests
Day 48Part XI0/4
- 189Compiling the engine to WebAssembly
- 190The npm package
- 191The browser playground
- 192How fast is the compiler?
Day 49Part XI0/4
- 193Fuzzing the Rust engine
- 194Diagnostics
- 195Compiling in parallel
- 196Keeping it healthy
Day 50Part XII0/4
- 197A command-line interface
- 198Release engineering
- 199The final benchmark matrix
- 200Capstone: the whole machine