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Fixes #42 increment/decrement whitespace bug #43

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Fixes #42 increment/decrement whitespace bug #43

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4 changes: 3 additions & 1 deletion index.mjs
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Original file line number Diff line number Diff line change
Expand Up @@ -895,11 +895,13 @@ export class Packer {
// - `/.../ in b` vs. `/.../in b`; also applies to other names or number literals
// starting with digits, but only `in` and `instanceof` are possible in the valid JS.
// - `a + + b` vs. `a ++ b`
// - `a + ++ b` vs. `a +++ b`
// - `a - - b` vs. `a -- b`
// - `a - -- b` vs. `a --- b`
// - short HTML comments only recognized in web browsers:
// - `a < ! --b` vs. `a <!--b`
// - `a-- > b` vs. `a-->b`
(prevToken.value + ' ' + token.value).match(/^\/ \/|\/ in(?:stanceof)?$|^(?:\+ \+|- -|! --|-- >)$/)
(prevToken.value + ' ' + token.value).match(/^\/ \/|\/ in(?:stanceof)?$|^(?:\+ \+\+?|- --?|! --|-- >)$/)
)) {
if (prevToken.abbr) {
if (token.abbr) {
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2 changes: 2 additions & 0 deletions test.mjs
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Expand Up @@ -379,6 +379,8 @@ test('prepareJs without abbrs', t => {
t.is(prepare(`switch (3) { case .3: ; }`), `switch(3){case.3:;}`);
t.is(prepare(`switch (3) { case ㅎ: ; }`), `switch(3){case \\u314e:;}`);
t.is(prepare(`for (const a of $tuffs) {}`), `for(const a of $tuffs){}`);
t.is(prepare(`a + ++b`), `a+ ++b`);
t.is(prepare(`a - --b`), `a- --b`);
});

//------------------------------------------------------------------------------
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