Commit Graph

10 Commits

Author SHA1 Message Date
Donny/강동윤
9e6a1f431b
fix(es/minifier): Fix minifier (#2355)
swc_ecma_minifier: 
 - `iife`: Don't replace parameters with identifiers in iife.
 - `sequences`: Add `Marks.synthesized_seq`.
 - pure: Drop empty statements.
2021-10-06 07:12:11 +00:00
강동윤
20ce326909
feat(es/minifer): Improve minifier (#2229)
swc_ecma_minifier:
 - `if_return`: Allow side-effect-free statements to come after `if_return`.
 - `collapse_vars`: Move variables without init to first.
 - `analyzer`: Remove useless fields.
 - Don't drop `return` tokens if there's a finally block.
 - `drop_return_value`: Drop side-effect-free return arguments.
 - `make_sequences`: Don't inject `void 0` to return args.
 - `if_terminate`: Move to the pure optimizer.
 - Fix a bug related to `RegExp`.
2021-09-16 04:23:33 +00:00
강동윤
c8b46bf6db
feat(es/minifier): Implement more rules (#2183)
swc_ecma_codegen:
 - Don't panic on `Pat::Invalid`.
 - Fix codegen of unary minus. (#2213)

swc_ecma_minifier:
 - Remove identifier of function expressions if a variable with same name exists.
 - `sequences`: Merge into the argument of a throw statement.
 - Use `ignore_return_value` for `void` expressions.
 - Improve inlining.
 - Drop last `return` if the return value is not used.
 - `sequences`: Merge `c++; use(c)` as `use(++c)`.
 - `sequences`: Merge assignments with an operator.
 - `comparisons`: Optimize the comparison operator if type is equivalent.
 - Fix `negate_cost`.
 - `unused`: Fix order or variable initalizer when variables are dropped.
 - Fix `top_retain` option.
 - `if_return`: Don't merge nested if it's wrong to do so. (#2214)
 - Fix negation of `if_return`.
2021-09-08 09:45:39 +00:00
강동윤
cb2b0c671f
fix(es/transforms/base): Optimize hygiene (#2193)
swc_ecma_transforms_base:
 - `hygiene`: Don't rename if not required. (#1600)

swc_ecma_minifier:
 - Remove `hygiene_optimizer`.
2021-09-01 13:11:55 +00:00
강동윤
427df9a979
fix(es/codegen): Fix sourcemap (#2142)
swc_ecma_codegen:
 - Use span for `await` token.
 - Use span for debugger statements.
 - Use span for object literals.
 - Use span for object patterns.
 - Use span for array literals.
 - Use span for `try`.
 - Use span for `for`.
 - Use span for `return`.
 - Use span for `break`.
 - Use span for `continue`.
 - Use span for `this`.
 - Use span for `switch`.
 - Use span for `catch`.
 - Use span for `case`.
 - Use span for `function`.
 - Use span for unary expressions.

swc_ecma_minifier:
 - Normalize sequences expressions if the length is 1.
2021-08-25 08:23:55 +00:00
강동윤
71080dbd26
feat(es/minifier): Implement more rules (#2039)
swc_ecma_minifier:
 - Remove useless `0` in sequence expressions.
 - `analyzer`: Don't treat fn decl as fn expr.
 - `sequences`: Use sequence expressions in front of `b`.
 - `if_return`: Drop else token within same pass. (#2044)
 - Fix counting logic for `pass`. (#2044)
 - `analyzer`: Fix `ref_count`.
 - `hygiene`: Implement `visit_prop_name`.
 - `ignore_return_value`: Property access to function parameters may have side effects.
 - `inline`: Treat `!0` as literal.
 - Remove some dead codes if `unused` is enabled.

swc_ecma_utils:
 - Fix `may_have_side_effects`.
2021-08-10 08:52:28 +00:00
강동윤
026c21ec68
feat(es/minifier): Make minifier parallel (#2009)
swc_ecma_minifier:
 - Introduce `bundle` mode, which can be used to parallelize processing of bundled files.
 - Add a function analyzer that checks if the function references something from the outer scope.
 - Split out parellsizable passes.
 - Split `optimzer` into pure / non-pure.
 - Run pure optimizations in parallel.
2021-08-07 08:27:52 +00:00
강동윤
48bc26d3c9
fix(es): Fix codegen & minifier (#2006)
swc_ecma_codegen:
 - Emit a semicolon before `!`.
 - Emit a semicolon before `[`. (#2007)

swc_ecma_minifier:
 - Disable buggy passes.
 - `iife`: Don't inline async functions. (#2007)
2021-08-04 10:27:17 +00:00
강동윤
f44e25c3af
fix(es/minifier): Improve output of minifier (#1990)
swc_common:
 - Add `Span.has_mark`.

swc_ecma_codegen:
 - Emit `1e3` for `1000`.
 - Optimize output. (#1986)

swc_ecma_minifier:
 - name mangler: Don't use keywords as an id.
 - `properties`: Optimize member expression with string properties.
 - `inline`: Inline some function expressions even if it's not fn-local.
 - `analyzer`: Track reassignment correctly.
 - `analyzer`: Track fn-local correctly.
 - `sequences`: Inject `void` if required.
 - `inline`: Inline function declarations correctly.
 - `sequences`: Merge expressions into test of if statements.
 - `sequences`: Reduce calls to an assigned variable.
 - Use `Marks` instead of `&dyn Comments`.


swc_ecma_transforms_optimization:
 - `expr_simplifier`: Fix infinite loops.

node/swc:
 - Ensure that `.transform` performs minification. (#1989)
2021-08-04 00:52:47 +09:00
강동윤
b02e189d07
feat(es/minifier): Implement more rules (#1871)
swc_ecma_codegen:
 - Fix codegen of `U+0028` and `U+0029`. 

swc_ecma_minifier:
 - Implement MVP.

swc_ecma_transforms_base:
 - `fixer`: Handle seq/await in rhs of for-of.
2021-07-30 10:11:27 +09:00