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Merge pull request #30495 from Microsoft/fix29427

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Adjust offset to account for 'this' parameter when emitting parameter decorators
This commit is contained in:
Ron Buckton
2019-03-20 12:56:50 -07:00
committed by GitHub
parent 800f7a3447 07bec2893f
commit 2932421370
10 changed files with 154 additions and 3 deletions
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9
src/compiler/transformers/ts.ts
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@@ -1338,11 +1338,14 @@ namespace ts {
let decorators: (ReadonlyArray<Decorator> | undefined)[] | undefined;
if (node) {
const parameters = node.parameters;
for (let i = 0; i < parameters.length; i++) {
const parameter = parameters[i];
const firstParameterIsThis = parameters.length > 0 && parameterIsThisKeyword(parameters[0]);
const firstParameterOffset = firstParameterIsThis ? 1 : 0;
const numParameters = firstParameterIsThis ? parameters.length - 1 : parameters.length;
for (let i = 0; i < numParameters; i++) {
const parameter = parameters[i + firstParameterOffset];
if (decorators || parameter.decorators) {
if (!decorators) {
decorators = new Array(parameters.length);
decorators = new Array(numParameters);
}
decorators[i] = parameter.decorators;