fix(gatsby): fix eventemitter leak in page query runner #10593
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pieh
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Dec 21, 2018
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We probably will have other places where we don't remove event listeners |
DSchau
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<!-- Have any questions? Check out the contributing docs at https://gatsby.app/contribute, or ask in this Pull Request and a Gatsby maintainer will be happy to help :) --> ## Description <!-- Write a brief description of the changes introduced by this PR --> This fixes a bug introduced in #10593 by replacing the `.off` call with `.removeListener`. `.off` was introduced in Node v10.0.0 as an alias for `.removeListener` (nodejs/node#17156). ## Related Issues <!-- Link to the issue that is fixed by this PR (if there is one) e.g. Fixes #1234, Addresses #1234, Related to #1234, etc. --> Related to #10612
gpetrioli
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gpetrioli
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<!-- Have any questions? Check out the contributing docs at https://gatsby.app/contribute, or ask in this Pull Request and a Gatsby maintainer will be happy to help :) --> ## Description <!-- Write a brief description of the changes introduced by this PR --> This fixes a bug introduced in gatsbyjs#10593 by replacing the `.off` call with `.removeListener`. `.off` was introduced in Node v10.0.0 as an alias for `.removeListener` (nodejs/node#17156). ## Related Issues <!-- Link to the issue that is fixed by this PR (if there is one) e.g. Fixes gatsbyjs#1234, Addresses gatsbyjs#1234, Related to gatsbyjs#1234, etc. --> Related to gatsbyjs#10612
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Description
The query queue can fire the
drainevent multiple times, and the page query runner listens for the drain event and resolves a promise once it does. When this happens, it doesn't currently clear the resolve event handler from the queue emitter.This PR fixes that by simply unsubscribing once the drain event is fired.
I think this may properly fix #5510