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#6 Abstract classes: Approved. Extremely highly-requested. See design notes in my comment at the bottom #669 External modules with AMD always requires "exports" even when it is not used: Approved. Minor codegen improvement. #1003 Singleton types under the form of string literal types: Approved. Everyone gets excited when we talk about this one. #1007 Support user-defined type guard functions: Approved. Meaningfully improves type guards. #1283 type guards by constructor signature: Approved. Meaningfully improves type guards. #1295 Type Property type: Approved. Common pattern in JS libraries. #1544 No output with --out when using import statement: Approved. Catches a common source of user confusion #1554 typeof this.xxx gives "identifier expected" error: Approved. Patches an oversight in the grammar #1616 Type aliases requiring type parameters: Approved. Anders believes this will be quite difficult to implement. #1706 Union Type inference not working in class: Approved, tentatively. Type guards on dotted expressions. #1789 Make tsc runnable on Nashorn: Approved. Straightforward addition to our I/O wrapper to gain platform support.
Committed (1)
#247 Support looking for modules under node_modules when importing: Commited, assigned to Vlad as part of some other work he's doing
Converted to bug (1)
#282 Rename function / find all references doesn't affect inline object literals
PR desired, but not Approved yet (1)
#1213 Allow classes to be parametric in other parametric classes: Need to see an implementation here to try it out in more depth
Needs More Info / Justification (4)
#943 Use different relation when checking overload vs implementation signature compatibility: Need a concrete proposal here #1260 Consider property access a form of type guards: Too many open questions at this point #1790 Support super.apply from child constructor: Does the spread operator suffice here? #1809 The object primitive type: Needs more use cases / likely errors
Declined (3)
#293 Specify (absolute) path for library projects: Out of scope. Revisit post-2.0 and see if the third-party build ecosystem has landed on anything. #311 Traits: Too much overlap with a potential future ECMAScript feature #983 Global type references: Not enough use cases
#2214 Allow switch type guards. Useful expansion of type guard syntax #1940 Do we need to use "declare" for type aliased in d.ts files? ‘declare’ should be optional on type aliases (and interfaces), but is a no-op. #2694 Define assignability relation for primitive-constrained type parameters. For flowing through enum types in generics. #2369 Spread operator in 'new' expressions support for ES5? User-side workaround is really ugly.
Declined (7)
#1824 Rest binding element should contextually type initializer as a tuple. Too much complexity for not enough gain. Matches existing behavior for not inferring tuples when none exist #1844 Add downlevel and typing support for const enum members in computed properties. Not needed until we have string enums; re-visit if we get those. #1857 Make the Compiler and Language Service API Asynchronous. Too complex for not a lot of gain since we are not really I/O bound #2000 Support override keyword on class methods. Doesn’t provide a consistent experience (methods not marked override would not necessarily not be overrides, which would be too confusing). Not going to add a compiler flag for this. Maybe could solve with an attribute? #2172 Contextual typing of spread elements. Why spread literals in the first place? Low-priority. #2328 Generic type constraint does not apply to rest parameters. Does not actually make sense – the array type does not actually flow in to ‘args’ here #2357 Proposal: new ES6 style syntax to apply typeof on an ambient external module. Not enough gain for a fair bit of complexity
Needs More Info (2)
#2361 Allow wrapped values to be used in place of primitives. Ask for explicit proposal. #2176 Suggestion: errors based on control flow analysis. What is this asking for, precisely? Lump in with #228 maybe
#2341 Allow visibility on constructors - Accepted. No other good workarounds for forcing external consumers of your class to use a factory method #3079 tsc init to generate tsconfig.json - Very useful
Committed / In Progress (1)
#2499 Support single-module transpilation mode - Already in progress.
Needs More Info (4)
#1882 Make periodic pre-release builds available on npm - Assign to Jonathan to figure out what we should do here #2568 Generate a single declaration file for external modules - Needs clarification on what this work item represents #2709 Importing files other than TS modules - Needs clarification on whether a proposal in-thread covers the use cases being requested #2749 Typescript aborts on shebang - Do people intend to run the .ts file, or the .js file? This is somewhat confusing
Postponed (1)
#2176 Suggestion: errors based on control flow analysis - Very desired feature, but the scope and complexity of this are too large to fit before 2.0. Postpone and definitely revisit
Declined (4)
#1824 Rest binding element should contextually type initializer as a tuple - Didn't really see a compelling reason to do this #2714 Tuple suffix associated with rest element in a binding pattern - the current behavior is the intended behavior #3022 Embedded syntax block - Far too complex #2876 Contextual type assertion operator - Unclear that most people can actually reason about this correctly
Activity
RyanCavanaugh commentedon Apr 28, 2015
4/27/2015
Approved, Accepting PRs (11)
#6 Abstract classes: Approved. Extremely highly-requested. See design notes in my comment at the bottom
#669 External modules with AMD always requires "exports" even when it is not used: Approved. Minor codegen improvement.
#1003 Singleton types under the form of string literal types: Approved. Everyone gets excited when we talk about this one.
#1007 Support user-defined type guard functions: Approved. Meaningfully improves type guards.
#1283 type guards by constructor signature: Approved. Meaningfully improves type guards.
#1295 Type Property type: Approved. Common pattern in JS libraries.
#1544 No output with --out when using import statement: Approved. Catches a common source of user confusion
#1554 typeof this.xxx gives "identifier expected" error: Approved. Patches an oversight in the grammar
#1616 Type aliases requiring type parameters: Approved. Anders believes this will be quite difficult to implement.
#1706 Union Type inference not working in class: Approved, tentatively. Type guards on dotted expressions.
#1789 Make tsc runnable on Nashorn: Approved. Straightforward addition to our I/O wrapper to gain platform support.
Committed (1)
#247 Support looking for modules under node_modules when importing: Commited, assigned to Vlad as part of some other work he's doing
Converted to bug (1)
#282 Rename function / find all references doesn't affect inline object literals
PR desired, but not Approved yet (1)
#1213 Allow classes to be parametric in other parametric classes: Need to see an implementation here to try it out in more depth
Needs More Info / Justification (4)
#943 Use different relation when checking overload vs implementation signature compatibility: Need a concrete proposal here
#1260 Consider property access a form of type guards: Too many open questions at this point
#1790 Support super.apply from child constructor: Does the spread operator suffice here?
#1809 The
objectprimitive type: Needs more use cases / likely errorsDeclined (3)
#293 Specify (absolute) path for library projects: Out of scope. Revisit post-2.0 and see if the third-party build ecosystem has landed on anything.
#311 Traits: Too much overlap with a potential future ECMAScript feature
#983 Global type references: Not enough use cases
fdecampredon commentedon Apr 28, 2015
Nice :) thanks for the notes !
vvakame commentedon Apr 28, 2015
wow, great!
RyanCavanaugh commentedon May 4, 2015
5/4/2015
Approved, Accepting PRs (4)
#2214 Allow switch type guards. Useful expansion of type guard syntax
#1940 Do we need to use "declare" for type aliased in d.ts files? ‘declare’ should be optional on type aliases (and interfaces), but is a no-op.
#2694 Define assignability relation for primitive-constrained type parameters. For flowing through
enumtypes in generics.#2369 Spread operator in 'new' expressions support for ES5? User-side workaround is really ugly.
Declined (7)
#1824 Rest binding element should contextually type initializer as a tuple. Too much complexity for not enough gain. Matches existing behavior for not inferring tuples when none exist
#1844 Add downlevel and typing support for const enum members in computed properties. Not needed until we have string enums; re-visit if we get those.
#1857 Make the Compiler and Language Service API Asynchronous. Too complex for not a lot of gain since we are not really I/O bound
#2000 Support override keyword on class methods. Doesn’t provide a consistent experience (methods not marked override would not necessarily not be overrides, which would be too confusing). Not going to add a compiler flag for this. Maybe could solve with an attribute?
#2172 Contextual typing of spread elements. Why spread literals in the first place? Low-priority.
#2328 Generic type constraint does not apply to rest parameters. Does not actually make sense – the array type does not actually flow in to ‘args’ here
#2357 Proposal: new ES6 style syntax to apply typeof on an ambient external module. Not enough gain for a fair bit of complexity
Needs More Info (2)
#2361 Allow wrapped values to be used in place of primitives. Ask for explicit proposal.
#2176 Suggestion: errors based on control flow analysis. What is this asking for, precisely? Lump in with #228 maybe
RyanCavanaugh commentedon May 19, 2015
5/19/2015
Approved, Accepting PRs (2)
#2341 Allow visibility on constructors - Accepted. No other good workarounds for forcing external consumers of your class to use a factory method
#3079 tsc init to generate tsconfig.json - Very useful
Committed / In Progress (1)
#2499 Support single-module transpilation mode - Already in progress.
Needs More Info (4)
#1882 Make periodic pre-release builds available on npm - Assign to Jonathan to figure out what we should do here
#2568 Generate a single declaration file for external modules - Needs clarification on what this work item represents
#2709 Importing files other than TS modules - Needs clarification on whether a proposal in-thread covers the use cases being requested
#2749 Typescript aborts on shebang - Do people intend to run the .ts file, or the .js file? This is somewhat confusing
Postponed (1)
#2176 Suggestion: errors based on control flow analysis - Very desired feature, but the scope and complexity of this are too large to fit before 2.0. Postpone and definitely revisit
Declined (4)
#1824 Rest binding element should contextually type initializer as a tuple - Didn't really see a compelling reason to do this
#2714 Tuple suffix associated with rest element in a binding pattern - the current behavior is the intended behavior
#3022 Embedded syntax block - Far too complex
#2876 Contextual type assertion operator - Unclear that most people can actually reason about this correctly