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STM type parameters order from STM<R, E, A> to `STM<A, E =…
… never, R = never>` (#2043)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,5 @@ | ||
| --- | ||
| "effect": minor | ||
| --- | ||
|
|
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| change `STM` type parameters order from `STM<R, E, A>` to `STM<A, E = never, R = never>` |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,13 @@ | ||
| #!/bin/bash | ||
| dirs=(./src) | ||
| for dir in ${dirs[@]}; | ||
| do | ||
| echo Refactoring $dir | ||
| files=$(find $dir -type f \( -name "*.ts" -o -name "*.tsx" \) | xargs ls) | ||
| npx jscodeshift \ | ||
| -t \ | ||
| ./mod.ts \ | ||
| --extensions=ts,tsx \ | ||
| --parser=ts \ | ||
| $files | ||
| done |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,134 @@ | ||
| import type k from "ast-types/gen/kinds.js" | ||
| import type cs from "jscodeshift" | ||
|
|
||
| const enabled = { | ||
| swapSTMParams: false, | ||
| swapSTMGenParams: false, | ||
| cleanupSTM: false, | ||
| cleanupEffect: false, | ||
| cleanupStream: false, | ||
| cleanupExit: false | ||
| } | ||
|
|
||
| const cleanup = (nodeName: string) => (ast: cs.ASTPath<cs.TSTypeReference>) => { | ||
| const name = ast.value.typeName | ||
| const is = (node: typeof name): boolean => { | ||
| switch (node.type) { | ||
| case "Identifier": { | ||
| if (node.name === nodeName) { | ||
| return true | ||
| } | ||
| return false | ||
| } | ||
| case "JSXIdentifier": { | ||
| return false | ||
| } | ||
| case "TSQualifiedName": { | ||
| return is(node.right) | ||
| } | ||
| case "TSTypeParameter": { | ||
| return false | ||
| } | ||
| } | ||
| } | ||
| if ( | ||
| is(name) && | ||
| ast.value.typeParameters | ||
| ) { | ||
| const params = ast.value.typeParameters.params | ||
| const len = params.length | ||
| for (let i = 1; i < len; i++) { | ||
| popNever(params) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| const cleanupEffect = cleanup("Effect") | ||
| const cleanupStream = cleanup("Stream") | ||
| const cleanupExit = cleanup("Exit") | ||
| const cleanupSTM = cleanup("STM") | ||
|
|
||
| const swapParams = (nodeName: string) => (ast: cs.ASTPath<cs.TSTypeReference>) => { | ||
| const name = ast.value.typeName | ||
| const is = (node: typeof name): boolean => { | ||
| switch (node.type) { | ||
| case "Identifier": { | ||
| if (node.name === nodeName) { | ||
| return true | ||
| } | ||
| return false | ||
| } | ||
| case "JSXIdentifier": { | ||
| return false | ||
| } | ||
| case "TSQualifiedName": { | ||
| return is(node.right) | ||
| } | ||
| case "TSTypeParameter": { | ||
| return false | ||
| } | ||
| } | ||
| } | ||
| if ( | ||
| is(name) && | ||
| ast.value.typeParameters && | ||
| ast.value.typeParameters.params.length === 3 | ||
| ) { | ||
| const params = ast.value.typeParameters.params | ||
| const newParams = [params[2], params[1], params[0]] | ||
| popNever(newParams) | ||
| popNever(newParams) | ||
| ast.value.typeParameters.params = newParams | ||
| } | ||
| } | ||
|
|
||
| const swapSTMParams = swapParams("STM") | ||
| const swapSTMGenParams = swapParams("STMGen") | ||
|
|
||
| const popNever = (params: Array<k.TSTypeKind>) => { | ||
| if (params.length > 0 && params[params.length - 1].type === "TSNeverKeyword") { | ||
| params.pop() | ||
| } | ||
| } | ||
|
|
||
| export default function transformer(file: cs.FileInfo, api: cs.API) { | ||
| const j = api.jscodeshift | ||
| const root = j(file.source) | ||
|
|
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| const forEveryTypeReference = (node: typeof root, f: (ast: cs.ASTPath<cs.TSTypeReference>) => void) => { | ||
| node.find(j.TSTypeReference).forEach((ast) => { | ||
| f(ast) | ||
| }) | ||
| node.find(j.CallExpression).forEach((path) => { | ||
| const typeParams = (path.value as any).typeParameters as cs.TSTypeParameterInstantiation | ||
| if (typeParams) { | ||
| j(typeParams).find(j.TSTypeReference).forEach((tref) => { | ||
| f(tref) | ||
| }) | ||
| } | ||
| }) | ||
| } | ||
|
|
||
| forEveryTypeReference(root, (ast) => { | ||
| if (enabled.swapSTMParams) { | ||
| swapSTMParams(ast) | ||
| } | ||
| if (enabled.swapSTMGenParams) { | ||
| swapSTMGenParams(ast) | ||
| } | ||
| if (enabled.cleanupEffect) { | ||
| cleanupEffect(ast) | ||
| } | ||
| if (enabled.cleanupStream) { | ||
| cleanupStream(ast) | ||
| } | ||
| if (enabled.cleanupExit) { | ||
| cleanupExit(ast) | ||
| } | ||
| if (enabled.cleanupSTM) { | ||
| cleanupSTM(ast) | ||
| } | ||
| }) | ||
|
|
||
| return root.toSource() | ||
| } |
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